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159658 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

159658: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.062 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.250 INCHES MINIMUM IN, screw_material: STEEL, fastener_length: 1.100 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-754-2137, 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
159658
NSN: 5305-00-754-2137
NIINs: 007542137, 015881714
FSC: 5305 — Screws
CAGE: 0XEU2 — ALNITAK CORPORATION (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.062 INCHES NOMINAL IN
thread_class3A A
thread_length0.250 INCHES MINIMUM IN
screw_materialSTEEL
fastener_length1.100 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedCASEHARDENED
width_between_flats0.250 INCHES NOMINAL IN
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentNICKEL
NSN5305-00-754-2137
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 159658 · 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
•
HEAD HEIGHT: 0.062 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: NICKEL
•
FASTENER LENGTH: 1.100 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
FEATURES PROVIDED: CASEHARDENED
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.062 INCHES NOMINAL IN
SCREW SURFACE TREATMENTNICKEL
FASTENER LENGTH1.100 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
FEATURES PROVIDEDCASEHARDENED
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.250 INCHES NOMINAL IN
SCREW MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 1
5305PL0808684Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 159658?
159658 is a SCREW,MACHINE.
What parts can replace 159658?
There is 1 known substitute for 159658: 5305PL0808684. Substitute compatibility should be verified for your specific system.
What is the NSN for 159658?
159658 is cataloged in the U.S. Government catalog under NSN 5305-00-754-2137. 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.