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LFEM953-017 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

LFEM953-017: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include fastener_length: 0.188 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: M983 NIGHT VISION VIEWER; LITTON SYSTEMS, LITTON ELECTRO-OPTICAL DIV, 55311, nominal_thread_diameter: 0.138 INCHES IN, thread_quantity_per_inch: 32, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5305-01-471-7717, 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
LFEM953-017
NSN: 5305-01-471-7717
FSC: 5305 — Screws
CAGE: FASM4 — L.F.E. (FRA)
SPECIFICATIONS
fastener_length0.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identificationM983 NIGHT VISION VIEWER; LITTON SYSTEMS, LITTON ELECTRO-OPTICAL DIV, 55311
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-471-7717
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: LFEM953-017 · 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
•
FASTENER LENGTH: 0.188 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.188 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD DIRECTIONRIGHT-HAND
END ITEM IDENTIFICATIONM983 NIGHT VISION VIEWER; LITTON SYSTEMS, LITTON ELECTRO-OPTICAL DIV, 55311
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
240175-100Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is LFEM953-017?
LFEM953-017 is a SETSCREW.
What parts can replace LFEM953-017?
There is 1 known substitute for LFEM953-017: 240175-100. Substitute compatibility should be verified for your specific system.
What is the NSN for LFEM953-017?
LFEM953-017 is cataloged in the U.S. Government catalog under NSN 5305-01-471-7717. 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.