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91257A818 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91257A818: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.391 INCHES NOMINAL IN, thread_length: 1.500 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN, fastener_length: 6.000 INCHES NOMINAL IN, special_features: 0.625 INCH DIAMETER; 11 THREADS PER INCH IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-532-1823, 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
91257A818
NSN: 5306-01-532-1823
FSC: 5306 — Bolts
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.391 INCHES NOMINAL IN
thread_length1.500 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
fastener_length6.000 INCHES NOMINAL IN
special_features0.625 INCH DIAMETER; 11 THREADS PER INCH IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats0.938 INCHES NOMINAL IN
end_item_identification2350-01-219-7577 PERSONNEL CARRIERS M-113A1, M-113A2 AND M-113A3
part_name_assigned_by_controlling_agencyGRADE 8 ZINC-PLATED ALLOY STEEL HEX HEAD CAP SCREW
NSN5306-01-532-1823
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91257A818 · 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: 0.391 INCHES NOMINAL IN
•
FASTENER LENGTH: 6.000 INCHES NOMINAL IN
•
THREAD LENGTH: 1.500 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.938 INCHES NOMINAL IN
•
COLOR: NATURAL OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.391 INCHES NOMINAL IN
FASTENER LENGTH6.000 INCHES NOMINAL IN
THREAD LENGTH1.500 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.938 INCHES NOMINAL IN
COLORNATURAL OVERALL
SPECIAL FEATURES0.625 INCH DIAMETER; 11 THREADS PER INCH IN
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYGRADE 8 ZINC-PLATED ALLOY STEEL HEX HEAD CAP SCREW
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 91257A818?
91257A818 is a BOLT,MACHINE.
What is the NSN for 91257A818?
91257A818 is cataloged in the U.S. Government catalog under NSN 5306-01-532-1823. This indicates validated use in U.S. government and defense supply chains.
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