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91253A582 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91253A582: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: IRON ALLOY OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.656 INCHES NOMINAL IN, thread_length: 0.677 INCHES NOMINAL IN, fastener_length: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-642-7430, 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
91253A582
NSN: 5305-01-642-7430
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialIRON ALLOY OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.656 INCHES NOMINAL IN
thread_length0.677 INCHES NOMINAL IN
fastener_length0.875 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C NOMINAL OVERALL
special_featuresBLACK OXIDE ALLOY STEEL
thread_directionRIGHT-HAND
countersink_angle82.0 DEGREES NOMINAL
surface_treatmentOXIDE IRON OVERALL
width_across_flats0.190 INCHES NOMINAL IN
NSN5305-01-642-7430
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91253A582 · 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
•
WIDTH ACROSS FLATS: 0.190 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.677 INCHES NOMINAL IN
•
HARDNESS RATING: 32.0 ROCKWELL C NOMINAL OVERALL
•
NOMINAL THREAD DIAMETER: 0.3125 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
COLOR: BLACK OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.190 INCHES NOMINAL IN
FASTENER LENGTH0.875 INCHES NOMINAL IN
THREAD LENGTH0.677 INCHES NOMINAL IN
HARDNESS RATING32.0 ROCKWELL C NOMINAL OVERALL
NOMINAL THREAD DIAMETER0.3125 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
COLORBLACK OVERALL
SPECIAL FEATURESBLACK OXIDE ALLOY STEEL
SURFACE TREATMENTOXIDE IRON 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91253A582?
91253A582 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 91253A582?
91253A582 is cataloged in the U.S. Government catalog under NSN 5305-01-642-7430. This indicates validated use in U.S. government and defense supply chains.
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