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J646P10A — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

J646P10A: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHERDOUBLE HEXAGON EXTENDED WASHER, head_height: 0.373 INCHES MINIMUM AND 0.373 INCHES MINIMUM AND 0.393 INCHES MAXIMUM0.393 INCHES MAXIMUM IN, thread_class: 3A3A, thread_length: 0.719 INCHES MINIMUM AND 0.719 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-133-1051, 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
J646P10A
NSN: 5306-01-133-1051
FSC: 5306 — Bolts
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHERDOUBLE HEXAGON EXTENDED WASHER
head_height0.373 INCHES MINIMUM AND 0.373 INCHES MINIMUM AND 0.393 INCHES MAXIMUM0.393 INCHES MAXIMUM IN
thread_class3A3A
thread_length0.719 INCHES MINIMUM AND 0.719 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS
fastener_length0.802 INCHES MINIMUM AND 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
thread_directionRIGHT-HANDRIGHT-HAND
features_providedFINISHED HEADFINISHED HEAD
width_between_flats0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN
nominal_thread_diameter0.375 INCHES0.375 INCHES IN
extended_washer_diameter0.552 INCHES MINIMUM AND 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM0.572 INCHES MAXIMUM IN
NSN5306-01-133-1051
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: J646P10A · 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 THREADS32.0 MICROINCHES THREADS
•
EXTENDED WASHER THICKNESS: 0.090 INCHES MINIMUM AND 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM0.100 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.373 INCHES MINIMUM AND 0.373 INCHES MINIMUM AND 0.393 INCHES MAXIMUM0.393 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.802 INCHES MINIMUM AND 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.552 INCHES MINIMUM AND 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM0.572 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.719 INCHES MINIMUM AND 0.719 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: C50TF13 CL-B FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALLC50TF13 CL-B FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES0.375 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS
EXTENDED WASHER THICKNESS0.090 INCHES MINIMUM AND 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM0.100 INCHES MAXIMUM IN
HEAD HEIGHT0.373 INCHES MINIMUM AND 0.373 INCHES MINIMUM AND 0.393 INCHES MAXIMUM0.393 INCHES MAXIMUM IN
FASTENER LENGTH0.802 INCHES MINIMUM AND 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.552 INCHES MINIMUM AND 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM0.572 INCHES MAXIMUM IN
THREAD LENGTH0.719 INCHES MINIMUM AND 0.719 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONC50TF13 CL-B FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALLC50TF13 CL-B FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEADFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHERDOUBLE 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 1
J646P10AQQSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 J646P10A?
J646P10A is a BOLT,MACHINE.
What parts can replace J646P10A?
There is 1 known substitute for J646P10A: J646P10AQQ. Substitute compatibility should be verified for your specific system.
What is the NSN for J646P10A?
J646P10A is cataloged in the U.S. Government catalog under NSN 5306-01-133-1051. 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.