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A-7946 — HOLDER,SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A-7946: HOLDER,SPRING.

The HOLDER,SPRING is a the manufacturer industrial component. Key specifications include procurement_group_code: 22231, end_item_identification: FLYING HELMETS,SPH-4AF. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-760-8936, 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
A-7946
NSN: 5340-00-760-8936
NIINs: 007608936, 013699988
FSC: 5340 — Hardware, Commercial
CAGE: 05584 — AUTODYNE MANUFACTURING CO INC (USA)
SPECIFICATIONS
special_featuresPACKAGED IN POLYBAGS WITH LABELS;CONSISTS OF 1 BLACK RETENTION ASSEMBLY,6 CORROSION RESISTING STEEL SPRING WASHERS; 6,8-32 1/4 SCREWS; 5,3/16 POSTS
procurement_group_code22231
end_item_identificationFLYING HELMETS,SPH-4AF
NSN5340-00-760-8936
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-7946 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
KEY FEATURES
•
SUPPORTING OBJECT/SURFACE ATTACHMENT METHOD: ONE UNTHREADED MOUNTING HOLE 0.127 IN. DIAMETER IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SUPPORTING OBJECT/SURFACE ATTACHMENT METHODONE UNTHREADED MOUNTING HOLE 0.127 IN. DIAMETER IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
190-92-490Reference document
Same NSN cross-reference
Reference document — Secondary reference
553-1650-002Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-7946?
A-7946 is a HOLDER,SPRING.
What parts can replace A-7946?
There are 2 known substitutes for A-7946: 190-92-490, 553-1650-002. Substitute compatibility should be verified for your specific system.
What is the NSN for A-7946?
A-7946 is cataloged in the U.S. Government catalog under NSN 5340-00-760-8936. 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.