PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 174721
174721 ✓ 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,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.438 INCHES NOMINAL IN, thread_length: 0.375 INCHES MINIMUM IN, fastener_length: 0.938 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-677-1147, 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
174721
NSN: 5305-00-677-1147
FSC: 5305
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
thread_class2A A
head_diameter0.438 INCHES NOMINAL IN
thread_length0.375 INCHES MINIMUM IN
fastener_length0.938 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
first_diameter_from_head0.120 INCHES NOMINAL IN
thread_quantity_per_inch32
NSN5305-00-677-1147
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 174721 · 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
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.563 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.938 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.438 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 202 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 322 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 403 OR STEEL COMP 405 OR STEEL COMP 410 OR STEEL COMP 414 OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420 OR STEEL COMP 429 OR STEEL COMP 430 OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 431 OR STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 440F OR STEEL COMP 446 OVERALL A
•
FIRST DIAMETER FROM HEAD: 0.120 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES MINIMUM IN
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.563 INCHES NOMINAL IN
FASTENER LENGTH0.938 INCHES NOMINAL IN
HEAD DIAMETER0.438 INCHES NOMINAL IN
MATERIALSTEEL COMP 202 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 322 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 403 OR STEEL COMP 405 OR STEEL COMP 410 OR STEEL COMP 414 OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 420 OR STEEL COMP 429 OR STEEL COMP 430 OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 431 OR STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 440F OR STEEL COMP 446 OVERALL A
FIRST DIAMETER FROM HEAD0.120 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES MINIMUM IN
THREAD QUANTITY PER INCH32
HEAD STYLEKNURLED NO. 1
INTERNAL DRIVE STYLESLOT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
202310Interchangeable
interchangeable cross-reference
interchangeable
501511Interchangeable
interchangeable cross-reference
interchangeable
5-969Interchangeable
interchangeable cross-reference
interchangeable
CC0950-00Interchangeable
interchangeable cross-reference
interchangeable
F451ARJCJC060404-76Interchangeable
interchangeable cross-reference
interchangeable
7637517-11Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 174721?
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 174721?
174721 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace 174721?
There are 11 known substitutes for 174721: 202310, 501511, 5-969 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 174721?
174721 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-677-1147. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 174721

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026