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PartsTable / COMPONENT / S156A
S156A ✓ 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 OVERALL, head_style: HEXAGON, head_height: 0.234 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.000 INCHES NOMINAL IN, fastener_length: 1.250 INCHES NOMINAL 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 5305-00-445-3449, 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
S156A
NSN: 5305-00-445-3449
FSC: 5305
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.234 INCHES NOMINAL IN
thread_class2A A
thread_length1.000 INCHES NOMINAL IN
fastener_length1.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.562 INCHES NOMINAL IN
end_item_identification2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT)
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-445-3449
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S156A · 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
•
HEAD HEIGHT: 0.234 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
MATERIAL: STEEL OVERALL
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.562 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.234 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER0.375 INCHES IN
MATERIALSTEEL OVERALL
FASTENER LENGTH1.250 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.562 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
END ITEM IDENTIFICATION2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT)
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
25118Interchangeable
interchangeable cross-reference
interchangeable
25970Interchangeable
interchangeable cross-reference
interchangeable
25318Interchangeable
interchangeable cross-reference
interchangeable
425-118Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S156A?
S156A is a SCREW,CAP,HEXAGON HEAD.
What parts can replace S156A?
There are 4 known substitutes for S156A: 25118, 25970, 25318 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S156A?
S156A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-445-3449. 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