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12310448 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12310448: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: HEXAGONHEXAGON, head_height: 0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN, thread_class: 2A2A, thread_length: 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN, fastener_length: 0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-142-9135, 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
12310448
NSN: 5305-01-142-9135
FSC: 5305 — Screws
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleHEXAGONHEXAGON
head_height0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN
thread_class2A2A
thread_length0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN
fastener_length0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN
locking_featureSTRIP THREADSSTRIP THREADS
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentPASSIVATE OVERALLPASSIVATE OVERALL
width_between_flats0.428 INCHES NOMINAL0.428 INCHES NOMINAL IN
internal_drive_styleSLOTSLOT
end_item_identificationM981M981
NSN5305-01-142-9135
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12310448 · 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: 0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: NAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINTNAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINT
•
THREAD LENGTH: 0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN
•
FIRST DIAMETER FROM HEAD: 0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES0.250 INCHES IN
•
HEAD STYLE: HEXAGONHEXAGON
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN
FASTENER LENGTH0.415 INCHES NOMINAL0.415 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINTNAS 1283 ASSN STD SINGLE TREATMENT RESPONSE POINT
THREAD LENGTH0.280 INCHES NOMINAL0.280 INCHES NOMINAL IN
FIRST DIAMETER FROM HEAD0.187 INCHES NOMINAL0.187 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES0.250 INCHES IN
HEAD STYLEHEXAGONHEXAGON
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
WIDTH BETWEEN FLATS0.428 INCHES NOMINAL0.428 INCHES NOMINAL IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.135 INCHES NOMINAL0.135 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12310448?
12310448 is a SCREW,EXTERNALLY RELIEVED BODY.
What is the NSN for 12310448?
12310448 is cataloged in the U.S. Government catalog under NSN 5305-01-142-9135. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.