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303875 — WRENCH,VALVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

303875: WRENCH,VALVE.

The WRENCH,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: BREATHING APPARATUS 40912. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-959-2683, 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
303875
NSN: 5305-00-959-2683
NIINs: 009592683, 010639968
FSC: 5305 — Screws
CAGE: H0G87 — WIBA ZEVENAAR B.V. (NLD)
SPECIFICATIONS
end_item_identificationBREATHING APPARATUS 40912
NSN5305-00-959-2683
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 303875 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.092 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 0.438 INCHES NOMINAL IN
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SCREW MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OR ASTMA108 ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.338 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK UNDERCUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.092 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH0.438 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OR ASTMA108 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.338 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 2C STYLE
SCREW MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 4
FF-S-92Reference document
Same NSN cross-reference
Reference document — Identification reference
10396522Reference document
Same NSN cross-reference
Reference document — Informative reference only
AN505-416-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35190-286Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 303875?
303875 is a WRENCH,VALVE.
What parts can replace 303875?
There are 4 known substitutes for 303875: FF-S-92, 10396522, AN505-416-7 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 303875?
303875 is cataloged in the U.S. Government catalog under NSN 5305-00-959-2683. 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.