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138912 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

138912: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: PIN,STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-302-8637, 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
138912
NSN: 5306-00-302-8637
NIINs: 003028637, 014964333
FSC: 5306 — Bolts
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyPIN,STRAIGHT
NSN5306-00-302-8637
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 138912 · 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
•
FOURTH DIAMETER FROM HEAD: 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.120 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.880 INCHES NOMINAL IN
•
THREAD LENGTH: 0.300 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.073 INCHES NOMINAL FIRST HOLE IN
•
FIRST DIAMETER FROM HEAD: 0.344 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.275 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FOURTH DIAMETER FROM HEAD0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
HEAD HEIGHT0.120 INCHES NOMINAL IN
FASTENER LENGTH1.880 INCHES NOMINAL IN
THREAD LENGTH0.300 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.073 INCHES NOMINAL FIRST HOLE IN
FIRST DIAMETER FROM HEAD0.344 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.275 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER0.855 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 138912?
138912 is a PIN,STRAIGHT,HEADLESS.
What is the NSN for 138912?
138912 is cataloged in the U.S. Government catalog under NSN 5306-00-302-8637. 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.