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CA21021-1 — NUT,PLAIN,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

CA21021-1: NUT,PLAIN,PLATE.

The NUT,PLAIN,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, nut_style: PLATE, nut_height: 0.536 INCHES NOMINAL IN, nut_length: 0.689 INCHES NOMINAL IN, plate_width: 0.440 INCHES NOMINAL IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-154-7918, 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
CA21021-1
NSN: 5310-01-154-7918
FSC: 5310 — Nuts and Washers
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
nut_stylePLATE
nut_height0.536 INCHES NOMINAL IN
nut_length0.689 INCHES NOMINAL IN
plate_width0.440 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
plate_thickness0.025 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES IN
nut_counterbore_depth0.230 INCHES NOMINAL BASE IN
NSN5310-01-154-7918
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CA21021-1 · 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
•
PLATE THICKNESS: 0.025 INCHES NOMINAL IN
•
NUT LENGTH: 0.689 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
PLATE WIDTH: 0.440 INCHES NOMINAL IN
•
REMOVABLE NUT MANUFACTURER PART NUMBER: CA21021-1
•
NUT COUNTERBORE DEPTH: 0.230 INCHES NOMINAL BASE IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.025 INCHES NOMINAL IN
NUT LENGTH0.689 INCHES NOMINAL IN
THREAD SERIESUNF
PLATE WIDTH0.440 INCHES NOMINAL IN
REMOVABLE NUT MANUFACTURER PART NUMBERCA21021-1
NUT COUNTERBORE DEPTH0.230 INCHES NOMINAL BASE IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NUT HEIGHT0.536 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CA21021-1?
CA21021-1 is a NUT,PLAIN,PLATE.
What is the NSN for CA21021-1?
CA21021-1 is cataloged in the U.S. Government catalog under NSN 5310-01-154-7918. 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.