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PartsTable / COMPONENT / 28231ADX
28231ADX ✓ 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,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: HEXAGON, head_height: 0.120 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, fastener_length: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-132-3380, 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
28231ADX
NSN: 5305-01-132-3380
FSC: 5305
CAGE: 1VN02 — AIRDALE EXPRESS LLC DIV AIRDALE EXPRESS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleHEXAGON
head_height0.120 INCHES NOMINAL IN
thread_class3A A
thread_length0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.312 INCHES NOMINAL IN
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5305-01-132-3380
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 28231ADX · 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 CLASS: 3A A
•
HEAD HEIGHT: 0.120 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.312 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
HEAD HEIGHT0.120 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.312 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL CORROSION RESISTING OVERALL
FASTENER LENGTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH32
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
28231Interchangeable
interchangeable cross-reference
interchangeable
1149Interchangeable
interchangeable cross-reference
interchangeable
SA28231Interchangeable
interchangeable cross-reference
interchangeable
15754831-001Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28231ADX?
28231ADX is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 28231ADX?
There are 4 known substitutes for 28231ADX: 28231, 1149, SA28231 and 1 more. Substitute compatibility should be verified for your specific system.
Is 28231ADX still available?
28231ADX 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