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Alloy Steel Fasteners

High-strength alloy steel fasteners in 35CrMo and 40CrMo: socket head cap screws to Grade 12.9, button and flat head screws to Grade 10.9, hex bolts to Grade 8, and ASTM A193 B7 threaded rods and stud bolts. Finishes include black oxide, zinc plated, yellow zinc, black zinc and Dacromet. The range targets machinery, automotive and structural joints where carbon steel grades are insufficient.

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Hex Head Bolt — 3/8-16 UNC Hexagon Head Bolt Grade 8 Black Zinc 35CrMo Steel Fine-Strength Hex Bolt for Machinery
3/8-16

UNC Hexagon Head Bolt Grade 8 Black Zinc 35CrMo Steel Fine-Strength Hex Bolt for Machinery

$0.00
UNC Hexagon Head Bolt Grade 8 Black Zinc 35CrMo Steel Fine-Strength Hex Bolt for Machinery Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — 35CrMo Black Oxide Hex SFHCS UNC 1/4-20 5/16-18 3/8-16 1/2-13 High Strength ASME B18.3
1/4-205/16-183/8-161/2-13

35CrMo Black Oxide Hex SFHCS UNC High Strength ASME B18.3

$0.00
35CrMo Black Oxide Hex SFHCS UNC High Strength ASME B18.3 Material: 35CrMo Alloy Steel Grade / Class: Grade 10.9 Standards: ASME B18.3 Thread Series: UNC Finish / Coating: Black Oxide...
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Hex Head Bolt — Grade 8 Hex Head Bolt Multiple Materials B7/35CrMo/45# UNC 1/4-20 to 7/8-9 Black Oxide Heavy Duty
1/4-205/16-183/8-167/16-149/16-125/8-113/4-107/8-9

Grade 8 Hex Head Bolt Multiple Materials B7/35CrMo/45# UNC Black Oxide Heavy Duty

$0.00
Grade 8 Hex Head Bolt Multiple Materials B7/35CrMo/45# UNC Black Oxide Heavy Duty Material: 35CrMo Alloy Steel, 45# Carbon Steel Grade / Class: Grade 8 Thread Series: UNC Finish /...
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Hex Head Bolt — Black Finish Hex Head Bolt Grade 8 UNC 1/2-13 3/4-10 7/8-9 Black Oxide 35CrMo ASME B18.2.1
1/2-133/4-107/8-9

Black Finish Hex Head Bolt Grade 8 UNC Black Oxide 35CrMo ASME B18.2.1

$0.00
Black Finish Hex Head Bolt Grade 8 UNC Black Oxide 35CrMo ASME B18.2.1 Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Hex Head Bolt — UNC Coarse Thread Hex Bolt ASME B18.2.1 Grade 8 Black Oxide 35CrMo 1/4-20 3/8-16 1/2-13 3/4-10
1/4-203/8-161/2-13

UNC Coarse Thread Hex Bolt ASME B18.2.1 Grade 8 Black Oxide 35CrMo

$0.00
UNC Coarse Thread Hex Bolt ASME B18.2.1 Grade 8 Black Oxide 35CrMo Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish / Coating:...
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Hex Head Bolt — 7/8-9 UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt
7/8-9

UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt

$0.00
UNC Hex Head Bolt Grade 8 Black Zinc B7 Alloy Steel Large Diameter Coarse Thread Hex Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME...
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Hex Head Bolt — ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC 1/4-20 3/8-16 1/2-13 3/4-10 7/8-9 7/16-14 Black Oxide B7 Alloy Steel Hex Bolt
1/4-203/8-161/2-133/4-107/8-97/16-14

ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC Black Oxide B7 Alloy Steel Hex Bolt

$0.00
ASME B18.2.1 Grade 8 Hexagon Head Bolt UNC Black Oxide B7 Alloy Steel Hex Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME B18.2.1 Thread...
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Hex Head Bolt — 1/4-20 UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt
1/4-20

UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt

$0.00
UNC Hex Head Bolt Grade 8 Black Oxide B7 Alloy Steel ASME B18.2.1 Coarse Thread Hexagon Bolt Material: Alloy Steel Grade / Class: Grade 8, ASTM A193 B7 Standards: ASME...
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Hex Head Bolt — Hexagon Head Bolt for Heavy Machinery UNC 1/2-13 3/4-10 7/8-9 Black Zinc Grade 8 35CrMo Alloy Steel
1/2-133/4-107/8-9

Hexagon Head Bolt for Heavy Machinery UNC Black Zinc Grade 8 35CrMo Alloy Steel

$0.00
Hexagon Head Bolt for Heavy Machinery UNC Black Zinc Grade 8 35CrMo Alloy Steel Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish...
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Hex Head Bolt — ASME B18.2.1 Grade 8 Hex Head Bolt UNC 1/2-13 X 2 Inch Black Oxide 35CrMo Alloy Steel Hex Bolt
1/2-13

ASME B18.2.1 Grade 8 Hex Head Bolt UNC Black Oxide 35CrMo Alloy Steel Hex Bolt

$0.00
ASME B18.2.1 Grade 8 Hex Head Bolt UNC Black Oxide 35CrMo Alloy Steel Hex Bolt Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC...
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Hex Head Bolt — 35CrMo Alloy Steel Hex Head Bolt UNC 1/4-20 3/8-16 1/2-13 3/4-10 7/8-9 Black Oxide Grade 8 ASME B18.2.1
1/4-203/8-161/2-133/4-107/8-9

35CrMo Alloy Steel Hex Head Bolt UNC Black Oxide Grade 8 ASME B18.2.1

$0.00
35CrMo Alloy Steel Hex Head Bolt UNC Black Oxide Grade 8 ASME B18.2.1 Material: 35CrMo Alloy Steel Grade / Class: Grade 8 Standards: ASME B18.2.1 Thread Series: UNC Finish /...
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Socket Head Cap Screw — 35CrMo Steel Hex Socket Head Cap Screw Grade 12.9 UNC 5/8-11 3/4-10 1-8 1-1/4-7 Black Oxide
5/8-113/4-101-81-1/4-7

35CrMo Steel Hex Socket Head Cap Screw Grade 12.9 UNC Black Oxide

$0.00
35CrMo Steel Hex Socket Head Cap Screw Grade 12.9 UNC Black Oxide Material: 35CrMo Alloy Steel Grade / Class: Grade 12.9 Thread Series: UNC Finish / Coating: Black Oxide
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Socket Head Cap Screw — 35CrMo Steel Hex Socket Head Cap Screw Grade 10.9 Black Oxide Finish Heavy Duty DIN 912 5/16-18 1/2-13 7/8-9
5/16-181/2-137/8-9

35CrMo Steel Hex Socket Head Cap Screw Grade 10.9 Black Oxide Finish Heavy Duty DIN 912

$0.00
35CrMo Steel Hex Socket Head Cap Screw Grade 10.9 Black Oxide Finish Heavy Duty DIN 912 Material: 35CrMo Alloy Steel Grade / Class: Grade 10.9 Standards: DIN 912 Thread Series:...
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Socket Head Cap Screw — ASTM A193 B7 Grade 8.8 UNC/UNF Socket Head Cap Screw 1/4-20 5/16-18 3/8-16 1/2-13 5/8-11 Yellow Zinc Plated
1/4-205/16-183/8-161/2-135/8-11

ASTM A193 B7 Grade 8.8 UNC/UNF Socket Head Cap Screw Yellow Zinc Plated

$0.00
ASTM A193 B7 Grade 8.8 UNC/UNF Socket Head Cap Screw Yellow Zinc Plated Material: Alloy Steel Grade / Class: Grade 8.8 Standards: ASTM A193 Thread Series: UNC, UNF Finish /...
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Socket Head Cap Screw — 12.9 Grade 35CrMo/40CrMo UNC Hexagon Socket Head Cap Screw 5/16-18 1/2-13 5/8-11 3/4-10 1-8 Yellow Zinc
5/16-181/2-135/8-113/4-101-8

12.9 Grade 35CrMo/40CrMo UNC Hexagon Socket Head Cap Screw Yellow Zinc

$0.00
12.9 Grade 35CrMo/40CrMo UNC Hexagon Socket Head Cap Screw Yellow Zinc Material: 35CrMo Alloy Steel Grade / Class: Grade 12.9 Thread Series: UNC Finish / Coating: Yellow Zinc
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Socket Head Cap Screw — ASTM A193 B7 Grade 8.8 Socket Cap Screw UNC 1/4-20 5/16-18 3/8-16 1/2-13 Black Oxide Hex Socket
1/4-205/16-183/8-161/2-13

ASTM A193 B7 Grade 8.8 Socket Cap Screw UNC Black Oxide Hex Socket

$0.00
ASTM A193 B7 Grade 8.8 Socket Cap Screw UNC Black Oxide Hex Socket Material: Alloy Steel Grade / Class: Grade 8.8, ASTM A193 B7 Standards: ASTM A193 Thread Series: UNC...
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Socket Head Cap Screw — High Tensile Grade 12.9 35CrMo UNC/UNF Hex Socket Head Cap Screw 1/4 to 1-1/2 Yellow Zinc Plated Heavy Duty
1-12

High Tensile Grade 12.9 35CrMo UNC/UNF Hex Socket Head Cap Screw Yellow Zinc Plated Heavy Duty

$0.00
High Tensile Grade 12.9 35CrMo UNC/UNF Hex Socket Head Cap Screw Yellow Zinc Plated Heavy Duty Material: 35CrMo Alloy Steel Grade / Class: Grade 12.9 Thread Series: UNC, UNF Finish...
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Socket Head Cap Screw — 12.9 Grade Hexagon Socket Head Cap Screw Zinc-plated M1.5 M2 M2.5 M3 M4 M5 M6 Hex Allen Key Bolts DIN912(half/full Thread)
M1.5M2M2.5M3M4M5M6

12.9 Grade Hexagon Socket Head Cap Screw Zinc-plated Hex Allen Key Bolts DIN912(half/full Thread)

$0.00
12.9 Grade Hexagon Socket Head Cap Screw Zinc-plated Hex Allen Key Bolts DIN912(half/full Thread) Material: Alloy Steel Grade / Class: Grade 12.9 Standards: DIN 912 Thread Series: Metric Finish /...
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Socket Head Cap Screw — 35CrMo Black Oxide Hexagon Socket Cap Screw Grade 12.9 UNC 5/16-18 1/2-13 1-8 1-1/2-6 Bolts
5/16-181/2-131-81-1/2-6

35CrMo Black Oxide Hexagon Socket Cap Screw Grade 12.9 UNC Bolts

$0.00
35CrMo Black Oxide Hexagon Socket Cap Screw Grade 12.9 UNC Bolts Material: 35CrMo Alloy Steel Grade / Class: Grade 12.9 Thread Series: UNC Finish / Coating: Black Oxide
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Socket Head Cap Screw — 12.9 Grade Socket Head Cap Screw B7 Alloy UNC 1/2-13 5/8-11 3/4-10 7/8-9 1-8 Black Oxide
1/2-135/8-113/4-107/8-91-8

12.9 Grade Socket Head Cap Screw B7 Alloy UNC Black Oxide

$0.00
12.9 Grade Socket Head Cap Screw B7 Alloy UNC Black Oxide Material: Alloy Steel Grade / Class: Grade 12.9, ASTM A193 B7 Thread Series: UNC Finish / Coating: Black Oxide...
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Socket Head Cap Screw — Grade 12.9 High Strength Socket Head Cap Screw 35CrMo UNC 1/4-20 5/8-11 7/8-9 1-8 Black Oxide
1/4-205/8-117/8-91-8

Grade 12.9 High Strength Socket Head Cap Screw 35CrMo UNC Black Oxide

$0.00
Grade 12.9 High Strength Socket Head Cap Screw 35CrMo UNC Black Oxide Material: 35CrMo Alloy Steel Grade / Class: Grade 12.9 Thread Series: UNC Finish / Coating: Black Oxide
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Socket Head Cap Screw — B7 Grade 12.9 Socket Head Cap Screw UNC 1/4-20 3/8-16 1/2-13 5/8-11 Black Oxide ASME B18.3
1/4-203/8-161/2-135/8-11

B7 Grade 12.9 Socket Head Cap Screw UNC Black Oxide ASME B18.3

$0.00
B7 Grade 12.9 Socket Head Cap Screw UNC Black Oxide ASME B18.3 Material: Alloy Steel Grade / Class: Grade 12.9, ASTM A193 B7 Standards: ASME B18.3 Thread Series: UNC Finish...
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Socket Head Cap Screw — ASTM A193 B7/35CrMo Grade 12.9 UNC Socket Head Cap Screw 1/4-20 to 1-1/2-6 Yellow Zinc ASME B18.3
1/4-201-1/2-6

ASTM A193 B7/35CrMo Grade 12.9 UNC Socket Head Cap Screw Yellow Zinc ASME B18.3

$0.00
ASTM A193 B7/35CrMo Grade 12.9 UNC Socket Head Cap Screw Yellow Zinc ASME B18.3 Material: Alloy Steel Grade / Class: Grade 12.9 Standards: ASME B18.3, ASTM A193 Thread Series: UNC...
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Socket Head Cap Screw — Grade 12.9 40CrMo UNC Hexagon Socket Cap Screw 1-8 1-1/4-7 1-1/2-6 1/2-13 5/8-11 Yellow Zinc ASME B18.3 Industrial
1-81-1/4-71-1/2-61/2-135/8-11

Grade 12.9 40CrMo UNC Hexagon Socket Cap Screw Yellow Zinc ASME B18.3 Industrial

$0.00
Grade 12.9 40CrMo UNC Hexagon Socket Cap Screw Yellow Zinc ASME B18.3 Industrial Material: 40CrMo Alloy Steel Grade / Class: Grade 12.9 Standards: ASME B18.3 Thread Series: UNC Finish /...
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Buying Guide

Common Questions

What information do you need to quote this series?

Share the standard, thread size, length, material, grade, finish and quantity. For non-standard parts, a drawing or sample helps us confirm production details faster.

Can you make sizes or materials not listed here?

Yes. We manufacture to drawing and to sample. Send your specification through the RFQ form and we will confirm feasibility, MOQ and lead time.

What inspection and material documents can you provide?

Material test certificates, dimensional inspection reports and coating reports are available on request, depending on the material and finish of your order.

What is the MOQ, and can I get samples first?

MOQ depends on size, material and finish — standard catalog sizes start lower, and custom parts are quoted per drawing. Samples are available for most standard items; mention sampling when you send the RFQ and we will confirm.

How long does production and delivery take?

Lead time is confirmed per order with your quotation. Coated and custom parts need additional production and surface-treatment time. Share your target delivery date in the RFQ and we will confirm whether we can meet it before you commit.

Can't find the exact spec?

We manufacture standard and custom fasteners to order. Tell us the size, material, grade, finish and quantity — or send your drawing — and we will confirm MOQ and lead time.

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