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91257A602 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91257A602: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.203 INCHES NOMINAL IN, thread_length: 6.000 INCHES NOMINAL IN, hardness_rating: 33.0 ROCKWELL C NOMINAL OVERALL, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-583-9420, 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
91257A602
NSN: 5305-01-583-9420
FSC: 5305 — Screws
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.203 INCHES NOMINAL IN
thread_length6.000 INCHES NOMINAL IN
hardness_rating33.0 ROCKWELL C NOMINAL OVERALL
surface_treatmentZINC OVERALL
width_between_flats0.500 INCHES NOMINAL IN
end_item_identification2350-01-087-1095 TANK, COMBAT,FULL TRACK
minimum_tensile_strength0 POUNDS PER SQUARE INCH LBS
NSN5305-01-583-9420
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91257A602 · 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: 0.203 INCHES NOMINAL IN
•
THREAD LENGTH: 6.000 INCHES NOMINAL IN
•
HARDNESS RATING: 33.0 ROCKWELL C NOMINAL OVERALL
•
HEAD STYLE: HEXAGON
•
WIDTH BETWEEN FLATS: 0.500 INCHES NOMINAL IN
•
COLOR: YELLOW OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
MINIMUM TENSILE STRENGTH: 0 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.203 INCHES NOMINAL IN
THREAD LENGTH6.000 INCHES NOMINAL IN
HARDNESS RATING33.0 ROCKWELL C NOMINAL OVERALL
HEAD STYLEHEXAGON
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
COLORYELLOW OVERALL
SURFACE TREATMENTZINC OVERALL
MINIMUM TENSILE STRENGTH0 POUNDS PER SQUARE INCH LBS
END ITEM IDENTIFICATION2350-01-087-1095 TANK, COMBAT,FULL TRACK
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91257A602?
91257A602 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for 91257A602?
91257A602 is cataloged in the U.S. Government catalog under NSN 5305-01-583-9420. 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.