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Technical Data Sheet
PartsTable / COMPONENT / S/1/4-20X1/2
S/1/4-20X1/2 ✓ 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 S/1/4-20X1/2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-182-9483, 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
S/1/4-20X1/2
NSN: 5305-00-182-9483
FSC: 5305
CAGE: 97539 — APM HEXSEAL CORP (USA)
SPECIFICATIONS
Part NumberS/1/4-20X1/2
NSN5305-00-182-9483
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S/1/4-20X1/2 · 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 LENGTH: 0.369 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
•
FEATURES PROVIDED: O RING
•
HEAD STYLE: WATERTIGHT
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.369 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
FEATURES PROVIDEDO RING
HEAD STYLEWATERTIGHT
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE
FASTENER LENGTH0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
1-4-20X1-2Interchangeable
interchangeable cross-reference
interchangeable
1/4-20X1/2Interchangeable
interchangeable cross-reference
interchangeable
HB1-1/4-20X12Interchangeable
interchangeable cross-reference
interchangeable
845-6603141-86Interchangeable
interchangeable cross-reference
interchangeable
01-435-0085-5PC141Interchangeable
interchangeable cross-reference
interchangeable
HT14R20S08Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S/1/4-20X1/2?
S/1/4-20X1/2 is a S/1/4-20X1/2.
What parts can replace S/1/4-20X1/2?
There are 10 known substitutes for S/1/4-20X1/2: 1-4-20X1-2, 1/4-20X1/2, HB1-1/4-20X12 and 7 more. Substitute compatibility should be verified for your specific system.
Is S/1/4-20X1/2 still available?
S/1/4-20X1/2 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