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305503 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

305503: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include end_item_identification: MICROSCOPE, SURGICAL W/STAND. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-558-3322, 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
305503
NSN: 5325-00-558-3322
NIINs: 005583322, 011651282, 015288045
FSC: 5325 — Fastening Devices
CAGE: 65282 — WHITE MOTOR CORP (USA)
SPECIFICATIONS
end_item_identificationMICROSCOPE, SURGICAL W/STAND
NSN5325-00-558-3322
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 305503 · 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
•
MATERIAL HARDNESS RATING: 42.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: EXTERNAL
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL DIAMETER: 0.095 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1065-1070 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 1.315 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING42.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
USAGE DESIGNEXTERNAL
END STYLE90 DEGREE PARALLEL
MATERIAL DIAMETER0.095 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1065-1070 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER1.315 INCHES NOMINAL IN
INSIDE DIAMETER1.125 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SUBSTITUTES & CROSS-REFERENCES 7
401076Reference document
Same NSN cross-reference
Reference document — Secondary reference
10A7280Reference document
Same NSN cross-reference
Reference document — Secondary reference
10BM0227Reference document
Same NSN cross-reference
Reference document — Secondary reference
185568Reference document
Same NSN cross-reference
Reference document — Secondary reference
68061HReference document
Same NSN cross-reference
Reference document — Secondary reference
24339WReference document
Same NSN cross-reference
Reference document — Secondary 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 305503?
305503 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 305503?
There are 7 known substitutes for 305503: 401076, 10A7280, 10BM0227 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 305503?
305503 is cataloged in the U.S. Government catalog under NSN 5325-00-558-3322. 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.