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Technical Data Sheet
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91857A249 — Technical Data Sheet

✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, thread_length: 1.000 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 1.000 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: COOLANT RECYCLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-01-492-3277, 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
91857A249
NSN: 5305-01-492-3277
FSC: 5305
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleROUND
thread_length1.000 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length1.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identificationCOOLANT RECYCLE
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-492-3277
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91857A249 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD LENGTH: 1.000 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
THREAD QUANTITY PER INCH: 24
•
FASTENER LENGTH: 1.000 INCHES NOMINAL IN
•
HEAD STYLE: ROUND
TECHNICAL CHARACTERISTICS
THREAD DIRECTIONRIGHT-HAND
END ITEM IDENTIFICATIONCOOLANT RECYCLE
THREAD LENGTH1.000 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW MATERIALSTEEL CORROSION RESISTING
THREAD QUANTITY PER INCH24
FASTENER LENGTH1.000 INCHES NOMINAL IN
HEAD STYLEROUND
NOMINAL THREAD DIAMETER0.190 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
20055-235InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2410 55/64InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
53155InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1302InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
20055InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
325C142InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91857A249?
91857A249 is a SCREW,MACHINE.
What parts can replace 91857A249?
There are 18 known substitutes for 91857A249: 20055-235, 2410 55/64, 53155 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91857A249?
91857A249 is cataloged in the Federal Logistics Information System under NSN 5305-01-492-3277. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026