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1239146 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1239146: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: HEXAGON EXTENDED WASHER, head_height: 0.320 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.420 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 0.890 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-152-2582, 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
1239146
NSN: 5306-01-152-2582
FSC: 5306 — Bolts
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
head_styleHEXAGON EXTENDED WASHER
head_height0.320 INCHES MAXIMUM IN
thread_class2A A
thread_length0.420 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.890 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN
hardness_rating25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.350 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.370 INCHES NOMINAL FIRST SHOULDER IN
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
NSN5306-01-152-2582
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1239146 · 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: 0.050 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.320 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.890 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.350 INCHES NOMINAL FIRST SHOULDER IN
•
EXTENDED WASHER DIAMETER: 0.610 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.370 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.420 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.050 INCHES MINIMUM IN
HEAD HEIGHT0.320 INCHES MAXIMUM IN
FASTENER LENGTH0.890 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN
SHOULDER LENGTH0.350 INCHES NOMINAL FIRST SHOULDER IN
EXTENDED WASHER DIAMETER0.610 INCHES NOMINAL IN
SHOULDER DIAMETER0.370 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.420 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GRADE 5 MFR REF 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 1239146?
1239146 is a BOLT,SHOULDER.
What is the NSN for 1239146?
1239146 is cataloged in the U.S. Government catalog under NSN 5306-01-152-2582. 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.