PartsTable
Technical Data Sheet
Download PDF

42R21-M07-F15 — NUT,PLAIN,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

42R21-M07-F15: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CLINCH, nut_height: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, nut_diameter: 0.528 INCHES MINIMUM AND 0.534 INCHES MAXIMUM IN, pilot_length: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-144-6281, 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
42R21-M07-F15
NSN: 5310-01-144-6281
FSC: 5310 — Nuts and Washers
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleCLINCH
nut_height0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
nut_diameter0.528 INCHES MINIMUM AND 0.534 INCHES MAXIMUM IN
pilot_length0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
pilot_diameter0.430 INCHES MINIMUM AND 0.433 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle90.0 DEGREES NOMINAL BOSS
surface_treatmentOXIDE OVERALL
nominal_thread_size0.190 INCHES IN
NSN5310-01-144-6281
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 42R21-M07-F15 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM FLANGE IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT DIAMETER: 0.528 INCHES MINIMUM AND 0.534 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM FLANGE IN
NUT COUNTERBORE DEPTH0.427 INCHES MINIMUM AND 0.442 INCHES MAXIMUM BOSS IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT DIAMETER0.528 INCHES MINIMUM AND 0.534 INCHES MAXIMUM IN
COUNTERBORE DIAMETER0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM FLANGE IN
COUNTERBORE DIAMETER0.374 INCHES MINIMUM AND 0.377 INCHES MAXIMUM BOSS IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
6284E-SS-1032-6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
M143-182Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy 42R21-M07-F15?
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 42R21-M07-F15?
42R21-M07-F15 is a NUT,PLAIN,CLINCH.
What parts can replace 42R21-M07-F15?
There are 2 known substitutes for 42R21-M07-F15: 6284E-SS-1032-6, M143-182. Substitute compatibility should be verified for your specific system.
What is the NSN for 42R21-M07-F15?
42R21-M07-F15 is cataloged in the U.S. Government catalog under NSN 5310-01-144-6281. 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 — 42R21-M07-F15

✓ 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.