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J642P06A — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

J642P06A: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.496 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, screw_material: NICKEL ALLOY 718, fastener_length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-032-8573, 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
J642P06A
NSN: 5305-01-032-8573
FSC: 5305 — Screws
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
thread_class3A A
thread_length0.496 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
screw_materialNICKEL ALLOY 718
fastener_length0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.218 INCHES NOMINAL IN
nominal_thread_diameter0.164 INCHES IN
extended_washer_diameter0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_quantity_per_inch36
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF)
NSN5305-01-032-8573
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: J642P06A · 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: 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.496 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON EXTENDED WASHER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
HEAD HEIGHT0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
FASTENER LENGTH0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
THREAD LENGTH0.496 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.218 INCHES NOMINAL IN
SCREW MATERIALNICKEL ALLOY 718
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 J642P06A?
J642P06A is a SCREW,MACHINE.
What is the NSN for J642P06A?
J642P06A is cataloged in the U.S. Government catalog under NSN 5305-01-032-8573. 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.