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Technical Data Sheet
PartsTable / COMPONENT / 1/4-20 X 1 HEX
1/4-20 X 1 HEX ✓ 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 1/4-20 X 1 HEX is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-207-8253, 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
1/4-20 X 1 HEX
NSN: 5305-00-207-8253
FSC: 5305
CAGE: 83338 — TW METALS INC (USA)
SPECIFICATIONS
Part Number1/4-20 X 1 HEX
NSN5305-00-207-8253
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1/4-20 X 1 HEX · 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 BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
HEAD STYLE: HEXAGON
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
•
MINIMUM YIELD STRENGTH: 30000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
NOMINAL THREAD DIAMETER0.250 INCHES IN
END ITEM IDENTIFICATIONMRAP-RG-33 ARMORED UTILITY VEHICLE (AUV); MRAP - COUGAR AMBULANCE; MRAP - M-ATV WITH CS13 POP AND SNE; MRAP - COUGAR TOW; MRAP - COUGAR SABR/TOW; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
THREAD QUANTITY PER INCH20
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
MINIMUM YIELD STRENGTH30000 POUNDS PER SQUARE INCH LBS
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING80.0 ROCKWELL C MINIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
9000251-1Interchangeable
interchangeable cross-reference
interchangeable
87000251-1Interchangeable
interchangeable cross-reference
interchangeable
28352Interchangeable
interchangeable cross-reference
interchangeable
1626830P1Interchangeable
interchangeable cross-reference
interchangeable
28.352Interchangeable
Drill Set,pivot,jeweler's
interchangeable
36582Interchangeable
Drill Set,pivot,jeweler's
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/4-20 X 1 HEX?
1/4-20 X 1 HEX is a 1/4-20 X 1 HEX.
What parts can replace 1/4-20 X 1 HEX?
There are 19 known substitutes for 1/4-20 X 1 HEX: 9000251-1, 87000251-1, 28352 and 16 more. Substitute compatibility should be verified for your specific system.
Is 1/4-20 X 1 HEX still available?
1/4-20 X 1 HEX is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026