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Technical Data Sheet
PartsTable / COMPONENT / C7957-3816-3B
C7957-3816-3B ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The RETAINER,NUT AND BOLT is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-605-5432, 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
C7957-3816-3B
NSN: 5340-00-605-5432
FSC: 5340
CAGE: 78553 — TINNERMAN PALNUT ENGINEERED PRODUCTS, INC. (USA)
SPECIFICATIONS
Part NumberC7957-3816-3B
NSN5340-00-605-5432
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C7957-3816-3B MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
7412069Interchangeable
interchangeable cross-reference
interchangeable
1359Interchangeable
interchangeable cross-reference
interchangeable
2930002458164Interchangeable
interchangeable cross-reference
interchangeable
3438159Interchangeable
interchangeable cross-reference
interchangeable
S-3476Interchangeable
interchangeable cross-reference
interchangeable
35914Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C7957-3816-3B?
C7957-3816-3B is a RETAINER,NUT AND BOLT.
What parts can replace C7957-3816-3B?
There are 10 known substitutes for C7957-3816-3B: 7412069, 1359, 2930002458164 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C7957-3816-3B?
C7957-3816-3B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-605-5432. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026