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12315741 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12315741: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, thread_series: UNS COUNTERBORE, fastener_length: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-162-0017, 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
12315741
NSN: 5306-01-162-0017
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1212 OR STEEL COMP 1213 OVERALL
head_styleHEXAGON
head_height0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
thread_class2A A
thread_length0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
thread_seriesUNS COUNTERBORE
fastener_length0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
special_featuresPAC SFTT IS FOR STL MATL ONLY
style_designatorCOUNTERBORE THREADED
thread_directionRIGHT-HAND
threads_per_inch24 COUNTERBORE
surface_treatmentCOPPER OR TIN OVERALL
NSN5306-01-162-0017
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12315741 · 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: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
INTERNAL THREAD LENGTH: 0.250 INCHES MINIMUM COUNTERBORE IN
•
THREAD SERIES: UNS COUNTERBORE
•
INTERNAL THREAD DIRECTION: RIGHT-HAND COUNTERBORE
•
THREAD LENGTH: 0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
THREADS PER INCH: 24 COUNTERBORE
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
FASTENER LENGTH0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-14550 CL 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-T-10727 TY 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
INTERNAL THREAD LENGTH0.250 INCHES MINIMUM COUNTERBORE IN
THREAD SERIESUNS COUNTERBORE
INTERNAL THREAD DIRECTIONRIGHT-HAND COUNTERBORE
THREAD LENGTH0.395 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
THREADS PER INCH24 COUNTERBORE
STYLE DESIGNATORCOUNTERBORE THREADED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12315741?
12315741 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 12315741?
12315741 is cataloged in the U.S. Government catalog under NSN 5306-01-162-0017. 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.