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75F4155 — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

75F4155: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN, material: STEEL COMP 4140 AND STEEL OVERALL, grip_length: 1.261 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES OVERALL, fastener_length: 1.956 INCHES MINIMUM AND 1.966 INCHES MAXIMUM IN, hardness_rating: 54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-600-8790, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
75F4155
NSN: 5315-00-600-8790
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: F5322 — GIAT INDUSTRIES CENTRE DE TULLE (FRA)
SPECIFICATIONS
diameter0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
materialSTEEL COMP 4140 AND STEEL OVERALL
grip_length1.261 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES OVERALL
fastener_length1.956 INCHES MINIMUM AND 1.966 INCHES MAXIMUM IN
hardness_rating54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSPRING
surface_treatmentPHOSPHATE AND OXIDE OVERALL
end_item_identificationMACHINE GUN,CAL. .50 (M2); NSN 1005-00-322-9715
criticality_code_justificationABMZ
NSN5315-00-600-8790
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 75F4155 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
FASTENER LENGTH: 1.956 INCHES MINIMUM AND 1.966 INCHES MAXIMUM IN
•
HARDNESS RATING: 54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
•
CRITICALITY CODE JUSTIFICATION: ABMZ
•
STYLE DESIGNATOR: SPRING
•
DIAMETER: 0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
•
GRIP LENGTH: 1.261 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PHOSPHATE AND OXIDE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
FASTENER LENGTH1.956 INCHES MINIMUM AND 1.966 INCHES MAXIMUM IN
HARDNESS RATING54.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
CRITICALITY CODE JUSTIFICATIONABMZ
STYLE DESIGNATORSPRING
DIAMETER0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
GRIP LENGTH1.261 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
SURFACE TREATMENTPHOSPHATE AND OXIDE OVERALL
END ITEM IDENTIFICATIONMACHINE GUN,CAL. .50 (M2); NSN 1005-00-322-9715
MATERIALSTEEL COMP 4140 AND STEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
3662005679Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6008790Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10089858Reference document
Same NSN cross-reference
Reference document — Informative reference only
5315006008790Reference document
Same NSN cross-reference
Reference document — Informative reference only
5315PL0960091Reference document
Same NSN cross-reference
Reference document — Informative reference only
1005-600-8790Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 75F4155?
75F4155 is a PIN,SPRING.
What parts can replace 75F4155?
There are 9 known substitutes for 75F4155: 3662005679, 6008790, 10089858 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 75F4155?
75F4155 is cataloged in the U.S. Government catalog under NSN 5315-00-600-8790. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.