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PartsTable / COMPONENT / 171577
171577 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND, head_height: 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN, head_diameter: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN, fastener_length: 0.500 INCHES NOMINAL IN, features_provided: CASEHARDENED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-017-1577, 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
171577
NSN: 5305-00-017-1577
FSC: 5305
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND
head_height0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
head_diameter0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL IN
features_providedCASEHARDENED
surface_treatmentCADMIUM OR ZINC OVERALL
internal_drive_styleSLOT
nonmachine_thread_styleTHRU SLOT (TYPE D)
NSN5305-00-017-1577
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 171577 · 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 DIAMETER: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
•
FEATURES PROVIDED: CASEHARDENED
•
MATERIAL: STEEL OVERALL
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD HEIGHT: 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
NONMACHINE THREAD STYLE: THRU SLOT (TYPE D)
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
FEATURES PROVIDEDCASEHARDENED
MATERIALSTEEL OVERALL
INTERNAL DRIVE STYLESLOT
HEAD HEIGHT0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NONMACHINE THREAD STYLETHRU SLOT (TYPE D)
FASTENER LENGTH0.500 INCHES NOMINAL IN
HEAD STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
FFS107TYPECSSTYLE1SInterchangeable
interchangeable cross-reference
interchangeable
66843Interchangeable
interchangeable cross-reference
interchangeable
171354Interchangeable
interchangeable cross-reference
interchangeable
S3523ACInterchangeable
interchangeable cross-reference
interchangeable
171356Interchangeable
interchangeable cross-reference
interchangeable
171575Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 171577?
171577 is a SCREW,TAPPING.
What parts can replace 171577?
There are 8 known substitutes for 171577: FFS107TYPECSSTYLE1S, 66843, 171354 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 171577?
171577 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-017-1577. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026