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Technical Data Sheet
PartsTable / COMPONENT / 591-1-10
591-1-10 ✓ 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 591-1-10 is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, coil_quantity: 13.25, style_designator: CYLINDRICAL, spring_free_length: 1.250 INCHES NOMINAL IN, spring_solid_length: 0.500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-082-1128, 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
591-1-10
NSN: 5305-00-082-1128
FSC: 5305
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
coil_quantity13.25
style_designatorCYLINDRICAL
spring_free_length1.250 INCHES NOMINAL IN
spring_solid_length0.500 INCHES MAXIMUM IN
coil_helix_directionLEFT-HAND
NSN5305-00-082-1128
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 591-1-10 · 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
•
INTERNAL DRIVE STYLE: HEXAGON
•
HEAD DIAMETER: 0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 48
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL COMP 303 OVERALL
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLEHEXAGON
HEAD DIAMETER0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH48
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL COMP 303 OVERALL
THREAD CLASS3A A
FASTENER LENGTH0.490 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
878789Interchangeable
interchangeable cross-reference
interchangeable
591110Interchangeable
interchangeable cross-reference
interchangeable
591253Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 591-1-10?
591-1-10 is a 591-1-10.
What parts can replace 591-1-10?
There are 3 known substitutes for 591-1-10: 878789, 591110, 591253. Substitute compatibility should be verified for your specific system.
What is the NSN for 591-1-10?
591-1-10 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-082-1128. 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: July 2026