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177004-181 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

177004-181: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FILLISTER, head_height: 0.102 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 1.032 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, screw_material: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-050-9637, 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
177004-181
NSN: 5305-01-050-9637
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.102 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length1.032 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length1.094 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
thread_quantity_per_inch32
NSN5305-01-050-9637
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 177004-181 · 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: 0.102 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 1.094 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.032 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.102 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH1.094 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
THREAD LENGTH1.032 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
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
FF-S-92BReference document
Same NSN cross-reference
Reference document — Identification 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 177004-181?
177004-181 is a SCREW,MACHINE.
What parts can replace 177004-181?
There is 1 known substitute for 177004-181: FF-S-92B. Substitute compatibility should be verified for your specific system.
What is the NSN for 177004-181?
177004-181 is cataloged in the U.S. Government catalog under NSN 5305-01-050-9637. 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.