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PBFMS21296-09028 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

PBFMS21296-09028: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: SPLINE EXTENDED WASHER, grip_length: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN, head_height: 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-063-3787, 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
PBFMS21296-09028
NSN: 5306-01-063-3787
FSC: 5306 — Bolts
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleSPLINE EXTENDED WASHER
grip_length1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
head_height0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.5605 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN
thread_length1.005 INCHES MINIMUM AND 1.055 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length2.765 INCHES MINIMUM AND 2.795 INCHES MAXIMUM IN
hardness_rating51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
NSN5306-01-063-3787
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PBFMS21296-09028 · 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
•
SURFACE FINISH: 32.0 MICROINCHES GRIP
•
EXTENDED WASHER THICKNESS: 0.071 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.765 INCHES MINIMUM AND 2.795 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 1.037 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.005 INCHES MINIMUM AND 1.055 INCHES MAXIMUM IN
•
HARDNESS RATING: 51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.071 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
HEAD HEIGHT0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
FASTENER LENGTH2.765 INCHES MINIMUM AND 2.795 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER1.037 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
THREAD LENGTH1.005 INCHES MINIMUM AND 1.055 INCHES MAXIMUM IN
HARDNESS RATING51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLESPLINE 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 2
5306PL1497632Reference document
Same NSN cross-reference
Reference document — Informative reference only
MS21296-09028Reference 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 PBFMS21296-09028?
PBFMS21296-09028 is a BOLT,CLOSE TOLERANCE.
What parts can replace PBFMS21296-09028?
There are 2 known substitutes for PBFMS21296-09028: 5306PL1497632, MS21296-09028. Substitute compatibility should be verified for your specific system.
What is the NSN for PBFMS21296-09028?
PBFMS21296-09028 is cataloged in the U.S. Government catalog under NSN 5306-01-063-3787. 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.