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12339307 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12339307: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.263 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-188-0937, 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
12339307
NSN: 5306-01-188-0937
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.263 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
thread_class2A A
thread_length0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.625 INCHES NOMINAL IN
shoulder_length0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
NSN5306-01-188-0937
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12339307 · 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
•
EXTENDED WASHER THICKNESS: 0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.263 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.624 INCHES MINIMUM AND 0.676 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
HEAD HEIGHT0.263 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
SHOULDER LENGTH0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.624 INCHES MINIMUM AND 0.676 INCHES MAXIMUM IN
SHOULDER DIAMETER0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE 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 1
5585134Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 12339307?
12339307 is a BOLT,SHOULDER.
What parts can replace 12339307?
There is 1 known substitute for 12339307: 5585134. Substitute compatibility should be verified for your specific system.
What is the NSN for 12339307?
12339307 is cataloged in the U.S. Government catalog under NSN 5306-01-188-0937. 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.