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254 SMO Bolts

M1.6~M12 UNS S31254 Hex Nuts, SMO 254 Stainless Steel Fasteners Manufacturer in Mumbai, India

Great Steel & Metals is a leading SMO 254 Fasteners Manufacturer. We produce all kinds of bolts, nuts, studs and fasteners. These accessories need to be stronger, harder and have specific mechanical properties for use in specific applications. Therefore different material grades are used. The 254 SMO Bolts are pitting corrosion resistant and crevice corrosion resistant.

254 SMO Bolts

254 SMO Bolts

UNS S31254 Hex Nuts

UNS S31254 Hex Nuts

SMO 254 Stainless Steel Fasteners

SMO 254 Stainless Steel Fasteners


SMO 254 Nut, ASTM A479 SMO Bolt/nut Sizes, most reliable supplier of 254 SMO Bolt price in India.

They are very strong and tough. The added toughness makes it harder to machine. However, with good lubrication, sharp tools and overpowered machines, machining is possible. The UNS S31254 Hex Nuts are used with hex bolts in structurally stronger applications. The material’s corrosion resistance makes it applicable in high chloride ion concentrations such as in the sea waters. The ASTM A479 UNS S31254 Threaded Rod has high resistant to stress corrosion cracking as well.


254 SMO Bolts

Table of contents

DIN 1.4547 Nuts, Well-Made And Good Price M10 SMO UNS S31254 Shoulder Nuts, ASTM A479 254 SMO Coupling Nut, Latest SMO Werkstoff Nr. 1.4547 Hex Head Bolt Dimension

What is 254 SMO Bolts?

The material is electroslag remelted which provides it the extra resistance to pitting and crevice corrosions. Our DIN 1.4547 Screws are of high quality and are produced through the standard procedure. We test our products before supply to match the international standards. These products could be used in seawater and high corrosive media as well. As the electroslag remelting process provides cleaner material, there is no segregation. This is also useful in obtaining the corrosion resistance. Our SMO 254 Washers are durable and have high wear and tear properties. They could be used along with the bolts and nuts of the same grade material. We offer our customers only the best. You can get a full product list and price list by contacting us.


Specification of UNS S31254 Hex Nuts

SMO Werkstoff Nr. 1.4547 bolting materials Surface Coating:
  • Teflon Coated 254 SMO Bolts
  • Phosphate Coated SMO 254 Fasteners
  • Zinc Coated ASTM A479 SMO Fasteners
  • Ptfe Coated 254 SMO Fasteners
  • Xylon Coated DIN 1.4547 Fasteners
  • Cadmium Coated SMO UNS S31254 Fasteners
  • Hot Dipped Galvanizing Coated ASTM A479 254 SMO Fasteners

Manufacturer of all surface finishes in SMO 254 Nut including Zinc, Galvanised, Sherardized, Electroless Nickel, Dacromet, Geomet & PTFE.
Stainless Steel Grade 254 Bolts types SMO 254 Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts etc.
A479 SMO 254 Nut types SMO 254 Hex Head Nut, Eye Nut, Dome Nut, Wing Nut, T Nut, Panel Nut, Lock Nut, Coupling Nut, Square Nut, Acorn Nut etc.
SMO 254 Screws types SMO 254 Hex Head Cap Screws, Socket Set Screws, Anchor Screws, Blind Rivet, Socket Head Screws, Concrete Screws, Shoulder Screws, Panel Screws, Threaded Screws, Machine Screws etc.
ASTM A479 SMO Washer types SMO 254 Machine Washers, Flat Washer, Star Washers, Sealing Washer, Lock Washer, Split Washer in India
SS 254 SMO Fasteners Packing: IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Ready stock available metric 254 SMO Bolts
  • SMO 254 Bolts M16 x 65mm DIN933
  • ASTM A479 254 SMO Bolts M16 X 55mm
  • SMO Werkstoff Nr. 1.4547 Bolts M16 X 35mm
  • Stainless Steel Grade 254 Bolts M12 X 90mm
  • A479 SMO 254 Bolts M12 X 70mm
  • ASTM A479 SMO Bolts M16 x 45mm DIN933
  • 254 SMO Hex Nut M16
  • DIN 1.4547 Washer M16
  • SMO UNS S31254 Bolts M16 X 60mm
  • ASME SA 479 254 SMO Bolts M20 x 70mm
  • UNS S31254 SMO Bolts M20 x 75mm
SMO 254 Fasteners Material Specification ASTM A479 SMO Bolt/nut, UNS S31254 Bolts
ASTM A479 SMO Fasteners / Bolts Standard DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM and all International Standards
254 SMO Fasteners/ Bolts Size M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M30, M36 to M160
Length of 254 SMO Bolt 3 mm to 200 mm
SMO UNS S31254 Bolts, Studs Threads: METRIC, BSW, BSF, UNC, UNF or as required
DIN 1.4547 Nuts Standard: ANSI – American National Standards Institute

  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • SMO 254 Stud Bolt length are defined in ASME B16.5 standard
  • ASTM A479 SMO Hex nuts are defined in ASME B18.2.2
  • ASME B18.5

DIN: 931, 933, 934, 970

UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTF

ISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards
Source of raw materials to manufacture SMO UNS S31254 Shoulder Nuts Tata Steel, JSPL, RINL, Usha Martin, Dhamm Steel, Mukund Steel etc.
SCOPE
  • Manufacturer of Hot Forged UNS S31254 Hex Nuts, Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm lg
  • Manufacturer of CNC Machined 254 SMO Bolts, Nut / Bolt; up to M100 / 4” Dia, up to 1500mm lg
SMO 254 Stainless Steel Fasteners In Form of: Hex, Square, Round, Threading as per Gauge Etc.
Head drive: Phillips, Slotted, Phillips/Slot, Six-Lobe, etc
SMO 254 Hex Bolt Thread Metric Coarse
ASTM A479 SMO bolting Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1
254 SMO Bolts finishing: Zinc (yellow, white, blue, black), black oxide,
Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Stainless steel: Passivated
Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Mechanically Applied coating and some special one like DACROMET
Production process M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element

Mechanical Properties of 254 SMO Bolt

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.0 g/cm3 1320-1390 ℃ 300 650 35 %

Chemical Composition of DIN 1.4547 Nuts

SMO 254 Ni C Mo Mn Si Fe Cu S P Cr
17.5 – 18.5 0.02 max 6 – 6.5 1 max 0.8 max – 0.5 – 1 0.01 max 0.03 max 19.5 – 20.5

Physical Composition of SMO 254 Nuts

Properties
Metric
Imperial
Density
8 g/cm3
0.289 lb/in3

Equivalent Grade of SMO UNS S31254 Shoulder Nuts

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS SIS GOST
SMO 254 S31254 1.4547 Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7 – 2378 –

SMO 254 Stainless Steel Fasteners Types

ASTM A479 SMO Bolts And Set Screws

SMO 254 Hex Bolts

SMO 254 Hex Bolts

ASTM A479 SMO Hex Set Screws

ASTM A479 SMO Hex Set Screws

254 SMO Carriage Bolts

254 SMO Carriage Bolts

DIN 1.4547 Roofing Bolts

DIN 1.4547 Roofing Bolts

254 SMO Socket Head Screws

ASTM A479 SMO Socket Head Cap Screws

ASTM A479 SMO Socket Head Cap Screws

SMO 254 Low Head Socket Head Cap Screws

SMO 254 Low Head Socket Head Cap Screws

254 SMO Button Head Sockets

254 SMO Button Head Sockets

DIN 1.4547 Countersunk Sockets

DIN 1.4547 Countersunk Sockets

SMO UNS S31254 Socket Set Screws

SMO UNS S31254 Socket Set Screws

ASTM A479 254 SMO Socket Shoulder Screws

ASTM A479 254 SMO Socket Shoulder Screws

SMO Werkstoff Nr. 1.4547 Metric Socket Head Cap Screws

SMO Werkstoff Nr. 1.4547 Metric Socket Head Cap Screws

Stainless Steel Grade 254 UNC Socket Head Cap Screws

Stainless Steel Grade 254 UNC Socket Head Cap Screws

DIN 1.4547 Nuts

SMO 254 T Nuts

SMO 254 T Nuts

ASTM A479 SMO Wing Nuts

ASTM A479 SMO Wing Nuts

254 SMO Lock Nuts

254 SMO Lock Nuts

DIN 1.4547 Dome Nuts (Acorn)

DIN 1.4547 Dome Nuts (Acorn)

SMO UNS S31254 Hex Nuts

SMO UNS S31254 Hex Nuts

ASTM A479 254 SMO Lug Nuts

ASTM A479 254 SMO Lug Nuts

SMO Werkstoff Nr. 1.4547 Square Nuts

SMO Werkstoff Nr. 1.4547 Square Nuts

Stainless Steel Grade 254 Flange Nuts

Stainless Steel Grade 254 Flange Nuts

SMO UNS S31254 Washers

DIN 1.4547 Flat Washers

DIN 1.4547 Flat Washers

SMO 254 Penny Washers

SMO 254 Penny Washers

ASTM A479 SMO Spring Washers

ASTM A479 SMO Spring Washers

ASTM A479 254 SMO Toothed/ Serrated Lock Washers

ASTM A479 254 SMO Toothed/ Serrated Lock Washers

ASTM A479 254 SMO Threaded Rod

SMO UNS S31254 Metric Threaded Rod

SMO UNS S31254 Metric Threaded Rod

Stainless Steel Grade 254 UNC Threaded Rod

Stainless Steel Grade 254 UNC Threaded Rod

ASTM A479 SMO UNF Threaded Rod

ASTM A479 SMO UNF Threaded Rod

SMO 254 BSW / BSF Threaded Rod

SMO 254 BSW / BSF Threaded Rod

SMO Werkstoff Nr. 1.4547 Machine Screws

SMO 254 Pan Head Pozi

SMO 254 Pan Head Pozi

ASTM A479 254 SMO Pan Head Phillips

ASTM A479 254 SMO Pan Head Phillips

A479 SMO 254 Pan Head Slotted

A479 SMO 254 Pan Head Slotted

ASME SA 479 254 SMO Pan Head Torx

ASME SA 479 254 SMO Pan Head Torx

Stainless Steel Grade 254 Self Tapping Screws

ASTM A479 254 SMO Pan Head Pozi Self Tapping Screws

ASTM A479 254 SMO Pan Head Pozi Self Tapping Screws

SMO 254 Pan Head Slot Self Tapping Screws

SMO 254 Pan Head Slot Self Tapping Screws

ASTM A479 SMO Countersunk Head Pozi Self Tapping Screws

ASTM A479 SMO Countersunk Head Pozi Self Tapping Screws

DIN 1.4547 Countersunk Head Slotted Self Tapping Screws

DIN 1.4547 Countersunk Head Slotted Self Tapping Screws

A479 SMO 254 Self Drilling Screws

SMO 254 Z Purlin

SMO 254 Z Purlin

DIN 1.4547 Stitcher

DIN 1.4547 Stitcher

ASTM A479 SMO Hot Rolled Rail

ASTM A479 SMO Hot Rolled Rail

254 SMO Timber Fixing

254 SMO Timber Fixing

ASME SA 479 254 SMO Coach Screws, Hex Head

SMO 254 Coach Screw

SMO 254 Coach Screw

DIN 1.4547 Hex Head Coach Screw

DIN 1.4547 Hex Head Coach Screw

ASTM A479 SMO DIN 571 Coach Screw

ASTM A479 SMO DIN 571 Coach Screw

SMO UNS S31254 M10 Coach Screw

SMO UNS S31254 M10 Coach Screw

UNS S31254 SMO Security Fasteners

ASTM A479 SMO 2-Hole

ASTM A479 SMO 2-Hole

SMO 254 6-Lobe Pin

SMO 254 6-Lobe Pin

254 SMO Barrel Nut

254 SMO Barrel Nut

SMO UNS S31254 Self Drilling Screw

SMO UNS S31254 Self Drilling Screw

Werkstoff Nr. 1.4547 Petrochemical Studding & Nuts

SMO 254 Studs

SMO 254 Studs

ASTM A479 SMO Imperial Studs

ASTM A479 SMO Imperial Studs

254 SMO Metric Studs

254 SMO Metric Studs

DIN 1.4547 Heavy Hex Nuts

DIN 1.4547 Heavy Hex Nuts

SS 254 SMO U Bolts

SMO 254 U Bolt c/w 2 Nuts

SMO 254 U Bolt c/w 2 Nuts

Long Leg 254 SMO U Bolt c/w 4 Nuts

Long Leg 254 SMO U Bolt c/w 4 Nuts

DIN 1.4547 U Bolt with Plate

DIN 1.4547 U Bolt with Plate

Clamping U ASTM A479 SMO Bolts

Clamping U ASTM A479 SMO Bolts

Stainless Steel Grade 254 SMO Anchor Bolt

SMO 254 Wedge Anchor Bolts

SMO 254 Wedge Anchor Bolts

ASTM A479 SMO Expansion Anchor Bolt

ASTM A479 SMO Expansion Anchor Bolt

254 SMO Sleeve Anchor Bolt

254 SMO Sleeve Anchor Bolt

DIN 1.4547 Concrete Anchor Bolt

DIN 1.4547 Concrete Anchor Bolt

254 SMO Grade Rivets

SMO 254 POP Rivets (Open End)

SMO 254 POP Rivets (Open End)

ASTM A479 SMO Closed End POP Rivets (Sealed)

ASTM A479 SMO Closed End POP Rivets (Sealed)

254 SMO Large Flange POP Rivets

254 SMO Large Flange POP Rivets

DIN 1.4547 Countersunk POP Rivets

DIN 1.4547 Countersunk POP Rivets

Stainless Steel 254 SMO Inserts

SMO 254 Unthreaded Rod

SMO 254 Unthreaded Rod

254 SMO E-Z Lok Threaded Inserts

254 SMO E-Z Lok Threaded Inserts

DIN 1.4547 Dowel Pins

DIN 1.4547 Dowel Pins


Size in Inches of ASTM A479 SMO Bolt/nut

SMO 254 Screws Types SIZE GRADE ASME ISO ASTM
ASTM A479 SMO Socket Head Cap Screws M1.6 to M64 12.9 B18.3.1 M 4762 A574M
254 SMO Socket Low Head Cap Screws M4 to M20 10.9
DIN 1.4547 Socket Head Shoulder Screws M6 to M24 012.9 B18.3.3M
SMO UNS S31254 Countersunk Socket Head Screws M3 to M20 012.9 B18.3.5M 10642 F835M
ASTM A479 254 SMO Button Head Socket Screws M3 to M12 012.9 B18.3.4M 7380 F835M
SMO Werkstoff Nr. 1.4547 Flange Button Head Socket Screws M3 to M10 012.9 F835M
A479 SMO 254 Knurled Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
ASME SA 479 254 SMO Flat Point Socket Set Screws M6 to M12 45H B18.3.6M 4026 F912M
Stainless Steel Grade 254 Dog Point Socket Set Screws M3 to M20 45H B18.3.6M 4028 F912M
UNS S31254 SMO Cone Point Socket Set Screws M3 to M12 45H B18.3.6M 4027 F912M
Werkstoff Nr. 1.4547 Plain Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
SS 254 SMO Taper Pressure Plug M8 to M22 –

SMO 254 Nuts Type SIZE PROPERTY CLASS STANDARD
ASTM A479 SMO Hex Nut M6 to M42 10 ISO 4032
254 SMO Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)		 8 & `10 DIN 982
DIN 1.4547 Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)		 8 & 10 DIN 985
SMO UNS S31254 Hex Weld Nut M6 to M12 8 DIN 929

SMO 254 Washers Type SIZE (in mm) HARDNESS STANDARD
Square Section ASTM A479 SMO Spring Washer 3 to 39 HV (430 to 530) DIN 7980
Flat Section 254 SMO Spring Washer 3 to 39 HV (430 to 530) DIN 127 B
DIN 1.4547 Hardened Washer 12 to 30 HV (300 to 370) IS 2016
SMO UNS S31254 Hardened Washer 12 to 56 Rockwell 26 to 45 (HDG)
Rockwell 38 to 45 (Coated)		 ASTM F436M

Werkstoff Nr. 1.4547 Bolt Type SIZE PROPERTY CLASS TENSILE STRENGTH STANDARD
SMO 254 Hex Head Bolt / Screws M4 to M80 10.9 1040N / mm2 min ISO 4017 (Full Thread)
ISO 4014 (Half Thread)

Below table compares various 254 SMO Fasteners metric sizes to the closest inch equivalent

Metric 254 SMO Bolts Closest Inch
M1.4-0.3 Bolts 0-80 (L)
M2-0.4 Bolts 1-64 (S)
M2.5-0.45 Bolts 3-56 (L)
M3-0.5 Bolts 4-48 (S)
M3.5-0.6 Bolts 6-40 (Same)
M4-0.7 Bolts 8-36 (L)
M5-0.8 Bolts 10-32 (S)
M6-1.0 Bolts 1/4-28 (L)
M7-1.0 Bolts 1/4-28 (S)
M8-1.25 Bolts 5/16-18 (S)
M10-1.5 Bolts 3/8-16 (S)
M12-1.75 Bolts 1/2-13 (L)
M14-2.0 Bolts 9/16-12 (L)
M16-2.0 Bolts 5/8-11 (S)
M18-2.5 Bolts 3/4-10 (L)
M20-2.5 Bolts 3/4-10 (S)
M22-2.5 Bolts 7/8-9 (L)
M24-3.0 Bolts 1-8 (L)
M30-3.5 Bolts 1 1/8-7 (S)
M36-4.0 Bolts 1 3/8-6 (S)

*L = Larger
*S=Smaller


Torque Chart of ASTM A479 254 SMO Coupling Nut

Check below SMO 254 Bolt & Screw Torque which is calculated from a yield strength of 70ksi

ASTM A479 SMO Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 6.5 4.8
28 7.4 5.5
5/16″ 18 13.2 10.0
24 14.7 11.0
3/8″ 16 23.5 17.7
24 26.6 19.9
7/16″ 16 37.6 28.2
24 42.0 31.5
1/2″ 13 57.4 43.0
20 64.7 48.5
9/16″ 12 82.7 62.1
18 92.3 69.2
5/8″ 11 114.2 85.7
18 129.3 97.0
3/4″ 10 203 152
16 226 170
7/8″ 9 326 245
14 361 270
1″ 8 490 368
14 549 412
1-1/4″ 7 853 639
12 944 708
1-1/2″ 6 1484 639
12 1669 1252

Check below SMO 254 Bolt & Screw Torque which is calculated from a yield strength of 80ksi

ASTM A479 SMO Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 7.4 5.5
28 8.4 6.3
5/16″ 18 15.1 11.4
24 16.8 12.6
3/8″ 16 26.9 20.2
24 30.4 22.8
7/16″ 14 43.0 32.3
20 48.0 36.0
1/2″ 13 65.6 49.1
20 73.9 55.4
9/16″ 12 94.5 71.0
18 105.5 79.1
5/8″ 11 130.5 97.9
18 147.8 110.9
3/4″ 10 232 174
16 258 194
7/8″ 9 373 280
14 412 309
1″ 8 560 420
14 628 471
1-1/4″ 7 975 730
12 1079 809
1-1/2″ 6 1696 1271
12 1908 1430

largest supplier of small-quantity Stainless Steel Grade 254 Square Bolt/nut, A479 SMO 254 Wing Nut. ASME SA 479 254 SMO U Bolt, UNS S31254 SMO Full Thread Stud, Werkstoff Nr. 1.4547 Flange Bolts.

Exhaust system SS 254 SMO Fasteners, Stainless Steel Grade 254 SMO Hex Bolt, SS-254 SMO Screws, M16*50 Stainless Steel 254 SMO Washers, Grade 254 SMO Stud Bolts, Light gauge 254 SMO Grade Threaded Rod Weight Chart


SMO UNS S31254 Fasteners (Nut Bolts Screw Washer) DIN and ISO designations

254 SMO Bolts DIN No. Description
84 Slotted Cheese Head Machine Screws
85 Slotted Pan Head Machine Screws
94 Cotter Pin
125A Flat Washer (without Chamfer)
125B Flat Washer (with Chamfer)
127B Split Lock Washer
137B Spring Wave Washer
315 Wing Nut
439B Machine Screws Hex Nut, Finished Hex Jam Nut
911 Long Arm Hex Key
912 Hex Socket Head Cap Screws
916 Hex Socket Set Screws
931 Hex Head Cap Screws Partially Threaded
933 Hex Head Cap Screws Fully Threaded
934 Finished Hex Nut
939 Double End Stud
960 Hex Head Cap Screws Partially Threaded
961 Hex Head Cap Screws Fully Threaded
963 Slotted Flat Head Machine Screws
964 Slotted Oval Head Machine Screws
965 Phillips Flat Head Machine Screws
966 Phillips Oval Head Machine Screws
975 Threaded Rod
980V Hex Steel Prevailing Torque Lock Nut
985 Hex Nylon Insert Lock Nut
6334 Rod Coupling Nut
6797A External Tooth Lock Washer
6797J Internal Tooth Lock Washer
6912 Hex Low Socket Head Cap Screws
6921 Hex Flange Head Screws
6923 Hex Flange Nut
ISO 7379 Hex Socket Head Shoulder Screws
ISO 7380 Hex Button Socket Head Cap Screws
7985 Phillips Pan Head Machine Screws
7991 Hex Flat Socket Head Cap Screws

ANSI / ASME Standards for 254 SMO Bolts (inch series)

B18.1.1 Small Solid Rivets B18.8.1 Clevis Pins and Cotter Pins
B18.1.2 Large Rivets B18.8.2 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins
B18.2.1 Square and Hex Bolts and Screws B18.9 Plow Bolts
B18.2.2 Square and Hex Nuts B18.10 Track Bolts and Nuts
B18.2.6 Fasteners for use in Structural Applications B18.11 Miniature Screws
B18.3 Socket Cap, Shoulder and Set Screws B18.13 Screws and Washer Assemblies (Sems)
B18.5 Round Head Bolts B18.15 Forged Eyebolts
B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws B18.17 Wing Nuts, Thumb Screws and Wing Screws
B18.6.3 Machine Screws and Machine Screws Nuts B18.21.1 Lock Washers
B18.6.4 Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws B18.22.1 Plain Washers
B18.7 General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps B18.23.1 Beveled Washers

Dimension of Stainless Steel UNS S31254 Socket Head Cap Screw


Dimensions Of Stainless Steel UNS S31254 Socket Head Cap Screw

Nominal
Thread.
Hex Socket Size
Body diameter and Head height
Head Dia
Soc. length
Size
Pitch
Max
Min
Max
Min
J
D /H
A
K
M3
0.5
2.50
3.00
2.86
5.50
5.20
1.3
M4
0.70
3.00
4.00
3.82
7.00
6.64
2.00
M5
0.8
4.00
5.00
4.82
8.50
8.14
2.70
M6
1.0
5.00
6.00
5.82
10.00
9.64
3.30
M8
1.25
6.00
8.00
7.78
13.00
12.57
4.3
M10
1.5
8.00
10.00
9.78
16.00
15.57
5.50
M12
1.75
10.00
12.00
11.73
18.00
17.57
6.60
M16
2.0
14.00
16.00
15.73
24.00
23.48
8.80
M20
2.5
17.00
20.00
19.67
30.00
29.48
10.70
M24
3.0
19.00
24.00
23.67
36.00
35.38
12.90

Dimensions of SMO 254 Hex Nuts


Dimensions of 254 SMO Hex Nuts


**All measurements in millimeters**

Nominal Size or Basic Major Thread Diameter
F
G
H
Width
Across Flats
Width
Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
1/4
.2500
7/16
.438
.428
.505
.488
7/32
.226
.212
5/16
.3125
1/2
.500
.489
.577
.557
17/64
.273
.258
3/8
.3750
9/16
.562
.551
.650
.628
21/64
.337
.479
7/16
.4375
11/16
.688
.675
.794
.768
3/8
.385
.365
1/2
.5000
3/4
.750
.736
.866
.840
7/16
.448
.427
9/16
.5625
7/8
.875
.861
1.010
.982
31/64
.496
.473
5/8
.6250
15/16
.938
.922
1.083
1.051
35/64
.559
.535
3/4
.7500
1-1/8
1.125
1.088
1.299
1.240
41/64
.665
.617
7/8
.8750
1-5/16
1.312
1.269
1.516
1.447
3/4
.776
.724
1
1.0000
1-1/2
1.500
1.450
1.732
1.653
55/64
.887
.831
1-1/8
1.1250
1-11/16
1.688
1.631
1.949
1.859
31/32
.999
.939
1-3/8
1.3750
2-1/16
2.062
1.994
2.382
2.273
1-11/64
1.206
1.138
1-1/2
1.500
2-1/4
2.250
2.175
2.598
2.480
1-9/32
1.ASTM A194 GR. 8
1.245
1-5/8
1.6250
2-7/16
2.438
2.356
2.815
2.686
1-25/64
1.429
1.353
1-3/4
1.7500
2-5/8
2.625
2.538
3.031
2.893
1-1/2
1.540
1.460
2
2.0000
3
3.000
2.900
3.464
3.306
1-23/32
1.763
1.675
2-1/4
2.2500
3-3/8
3.375
3.263
3.897
3.719
1-15/16
1.986
1.890
2-1/2
2.5000
3-3/4
3.750
3.625
4.330
4.133
2-5/32
2.209
2.105
2-3/4
2.7500
4-1/8
4.125
3.988
4.763
4.546
2-3/8
2.431
2.319

254 SMO Flat Washer Dimensions


254 SMO Flat Washer Dimensions

Bolt Size
USS
SAE
OD (in.)
ID (in.)
Thickness
OD (in.)
ID (in.)
Thickness
1/8 (#6)
–
–
–
0.375
0.156
.036/.065
5/32 (#8)
–
–
–
0.438
0.188
.036/.065
3/16 (#10)
0.560
0.250
.036/.065
0.500
0.220
.036/.065
7/32 (#12)
–
–
–
0.562
0.250
.051/.080
1/4 (#14)
0.734
0.312
.051/.080
0.625
0.281
.051/.080
5/16
0.875
0.375
.064/.104
0.688
0.344
.051/.080
3/8
1.000
0.438
.064/.104
0.812
0.406
.051/.080
7/16
1.250
0.500
.064/.104
0.922
0.469
.051/.080
1/2
1.375
0.562
.086/.132
1.062
0.531
.074/.121
9/16
1.469
0.625
.086/.132
1.156
0.594
.074/.121
5/8
1.750
0.688
.108/.160
1.312
0.656
.074/.121
3/4
2.000
0.812
.122/.177
1.469
0.812
.108/.160
7/8
2.250
0.938
.136/.192
1.750
0.938
.108/.160
1
2.500
1.062
.136/.192
2.000
1.062
.108/.160
1 1/8
2.750
1.250
.136/.192
2.250
1.250
.108/.160
1 1/4
3.000
1.375
.136/.192
2.500
1.375
.136/.192
1 3/8
3.250
1.500
.153/.213
2.750
1.500
.136/.213
1 1/2
3.500
1.625
.153/.213
3.000
1.625
.153/.213
1 5/8
3.750
1.750
.153/.213
–
–
–
1 3/4
4.000
1.875
.153/.213
–
–
–
1 7/8
4.250
2.000
.153/.213
–
–
–
2
4.500
2.125
.153/.213
–
–
–
2 1/4
4.750
2.375
.320/.248
–
–
–
2 1/2
5.000
2.625
.210/.280
–
–
–
2 3/4
5.250
2.875
.228/.410S
–
–
–
3
5.500
3.125
.249/.327
–
–
–

254 SMO Hex Bolt Dimension


254 SMO Bolts Dimensions

NOMINAL SIZE (D)
BODY DIAMETER
HEAD THICKNEASTM A479
ACROASTM A479 THE FLATS
ACROASTM A479 CORNERS
D (MAX)
D (MIN)
H (MAX)
H (MIN)
F (MAX)
F (MIN)
C (MAX)
C (MIN)
m10
10.00
9.78
6.63
6.17
17.00
15.73
18.48
17.77
m12
12.00
11.73
7.76
4.24
19.00
17.73
20.78
20.03
m14
14.00
13.73
9.09
8.51
22.00
20.67
24.25
23.35
m16
16.00
15.73
10.32
9.68
24.00
23.67
27.71
26.75
m20
20.00
19.67
12.88
12.12
30.00
29.16
34.64
32.95
m24
24.00
23.67
15.44
14.56
36.00
35.00
41.57
39.55
m30
30.00
29.67
19.48
17.92
46.00
45.00
53.12
50.85
m36
36.00
35.61
23.38
21.63
55.00
53.80
63.51
60.79
m42
42.00
41.38
26.97
25.03
65.00
62.90
75.06
71.71
m48
48.00
47.38
31.07
28.93
75.00
72.60
86.60
82.76
m56
56.00
55.26
36.2
33.80
85.00
82.20
98.15
93.71
m64
64.00
63.26
41.32
38.68
95.00
91.80
109.70
104.65
m72
72.00
71.26
46.45
43.55
105.00
101.40
121.24
115.60
m80
80.00
79.26
51.58
48.42
115.00
111.00
132.72
126.54
m90
90.00
89.13
57.74
54.26
130.00
125.50
150.11
143.07
m100
90.00
99.13
63.9
60.10
145.00
140.00
167.43
159.60