PartsTable
Technical Data Sheet
Download PDF

151678 — KEY,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

151678: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.156 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.375 INCHES MINIMUM IN, screw_material: STEEL, fastener_length: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-639-3453, 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
151678
NSN: 5305-00-639-3453
NIINs: 006393453, 007609736
FSC: 5305 — Screws
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.156 INCHES NOMINAL IN
thread_class2A A
thread_length0.375 INCHES MINIMUM IN
screw_materialSTEEL
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.375 INCHES NOMINAL IN
internal_drive_styleSLOT
nominal_thread_diameter0.250 INCHES IN
screw_surface_treatmentNICKEL
thread_quantity_per_inch32
NSN5305-00-639-3453
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 151678 · 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: 0.156 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: NICKEL
•
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES NOMINAL IN
SCREW SURFACE TREATMENTNICKEL
FASTENER LENGTH0.875 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.375 INCHES NOMINAL IN
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 151678?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 151678?
151678 is a KEY,MACHINE.
What is the NSN for 151678?
151678 is cataloged in the U.S. Government catalog under NSN 5305-00-639-3453. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 151678

✓ 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.