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PBF1254-5D15 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBF1254-5D15: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON, head_height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-044-2979, 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
PBF1254-5D15
NSN: 5306-01-044-2979
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON
head_height0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
thread_class3A A
thread_length0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.389 INCHES MINIMUM AND 1.436 INCHES MAXIMUM IN
shoulder_length0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
width_between_flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
NSN5306-01-044-2979
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBF1254-5D15 · 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: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.389 INCHES MINIMUM AND 1.436 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
FASTENER LENGTH1.389 INCHES MINIMUM AND 1.436 INCHES MAXIMUM IN
SHOULDER LENGTH0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.327 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
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 5
ST3M497-5D15Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
109453-5D15XReference document
Same NSN cross-reference
Reference document — Secondary reference
VS3037-5D15Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
BM17019-5D15XReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MA5497-5D15Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PBF1254-5D15?
PBF1254-5D15 is a BOLT,SHOULDER.
What parts can replace PBF1254-5D15?
There are 5 known substitutes for PBF1254-5D15: ST3M497-5D15, 109453-5D15X, VS3037-5D15 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PBF1254-5D15?
PBF1254-5D15 is cataloged in the U.S. Government catalog under NSN 5306-01-044-2979. 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.