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PBF1287L4-17 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBF1287L4-17: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 1.000 INCHES NOMINAL IN, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-606-0727, 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
PBF1287L4-17
NSN: 5306-01-606-0727
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length1.000 INCHES NOMINAL IN
head_height0.250 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
thread_length0.468 INCHES NOMINAL IN
fastener_length1.515 INCHES MINIMUM AND 1.545 INCHES MAXIMUM IN
special_featuresFATIQUE LOADING HI-RANGE IS 4440 LBS LBS
thread_directionRIGHT-HAND
surface_treatmentLUBRICANT AND PASSIVATE OVERALL
width_between_flats0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
NSN5306-01-606-0727
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBF1287L4-17 · 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: 0.036 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.515 INCHES MINIMUM AND 1.545 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS-QQ-B-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.468 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: AGAV
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5829,PH13 - 8MO ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.036 INCHES NOMINAL IN
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH1.515 INCHES MINIMUM AND 1.545 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS-QQ-B-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
THREAD LENGTH0.468 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONAGAV
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5829,PH13 - 8MO ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
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 9
122897L4-17Reference document
Same NSN cross-reference
Reference document — Secondary reference
S343L4-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
122997L4-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AIC753L4-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
V83190L4-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VFK500L4-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PBF1287L4-17?
PBF1287L4-17 is a BOLT,CLOSE TOLERANCE.
What parts can replace PBF1287L4-17?
There are 9 known substitutes for PBF1287L4-17: 122897L4-17, S343L4-17, 122997L4-17 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PBF1287L4-17?
PBF1287L4-17 is cataloged in the U.S. Government catalog under NSN 5306-01-606-0727. 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.