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903628 — SIGHT,REFLEX

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

903628: SIGHT,REFLEX.

The SIGHT,REFLEX is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-00-017-9835, 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
903628
NSN: 5305-00-017-9835
NIINs: 000179835, 015909768
FSC: 5305 — Screws
CAGE: 92392 — ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
Part Number903628
NSN5305-00-017-9835
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 903628 · 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: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.625 INCHES MAXIMUM IN
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.510 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
THREAD LENGTH0.625 INCHES MAXIMUM IN
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.510 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 5 GRADE
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 6
FFS85TYPE2STYLE10PGRADE5Reference document
Same NSN cross-reference
Reference document — Identification reference
179835Reference document
Same NSN cross-reference
Reference document — Secondary reference
0903628Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
14X3228Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35295-57Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
0903628-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 903628?
903628 is a SIGHT,REFLEX.
What parts can replace 903628?
There are 6 known substitutes for 903628: FFS85TYPE2STYLE10PGRADE5, 179835, 0903628 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 903628?
903628 is cataloged in the U.S. Government catalog under NSN 5305-00-017-9835. 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.