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Catalogue parts. Case-backed supply.

From standard hex bolts to drawing-based specials — every product family backed by documented applications since 2011.

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Caifu fastener product reference 62 on a white background

Aerospace Equipment

Forging Press Hardened Flat Washer — M24–M140

Non-standard · Surface hardness HV620–HV790 · M24–M140

Aerospace Equipment

Forging Press Round Nut — M24–M140

Non-standard · 8 or 10 · M24–M140

Aerospace Equipment

Forging Press Tension Nut — M24–M140

Non-standard · 8 or 10 · M24–M140

Caifu fastener product reference 56 on a white background

High-Strength Fasteners

Marine Hexagon Nut — M16–M80

DIN 6515 or DIN 934 or non-standard · 10 or 12 · M16–M80

Caifu fastener product reference 54 on a white background

Large-Diameter Bolting

Marine Washer — M16–M140

DIN 6916 · HV300 Min · M16–M140

Caifu fastener product reference 45 on a white background

Mining Machinery

Conical Spring Washer — 1-1/4″

drawing · HRC40–45 · 1-1/4"

Mining Machinery

Flat Washer — 1-1/4″

ASTM F426 · HV300–370 · 1-1/4"

High-Strength Fasteners

Heavy Hex Flange Nut — 1-1/8″-7 UNC-3B

FB(drawing) · 10 · 1-1/8"-7 UNC-3B (before coating)

High-Strength Fasteners

Heavy Hex Nut — 1-1/4″-7 UNC-3B

FB(drawing) · 10 · 1-1/4"-7 UNC-3B (before coating)

Caifu fastener product reference 38 on a white background

High-Speed Rail Brake Disc Fasteners

12-Point Flange Locknut — M16

Non-standard · 10 · M16

Catalogue parts. Case-backed supply.

Forging Press Hardened Flat Washer — M24–M140

Forging Press Round Nut — M24–M140

Forging Press Tension Nut — M24–M140

Marine Hexagon Nut — M16–M80

Marine Washer — M16–M140

Conical Spring Washer — 1-1/4″

Flat Washer — 1-1/4″

Heavy Hex Flange Nut — 1-1/8″-7 UNC-3B

Heavy Hex Nut — 1-1/4″-7 UNC-3B

12-Point Flange Locknut — M16

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