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PartsTable / COMPONENT / P21338-001-01
P21338-001-01 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 AND STEEL COMP 303 OVERALL, hole_diameter: 0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN, overall_height: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN, outside_diameter: 0.612 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.006 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-805-4389, 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
P21338-001-01
NSN: 5310-00-805-4389
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 302 AND STEEL COMP 303 OVERALL
hole_diameter0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
overall_height0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
outside_diameter0.612 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.006 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-805-4389
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P21338-001-01 · 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
•
MATERIAL THICKNESS: 0.006 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL COMP 302 AND STEEL COMP 303 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
OUTSIDE DIAMETER: 0.612 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.006 INCHES MINIMUM AND 0.010 INCHES MAXIMUM IN
HOLE DIAMETER0.435 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 302 AND STEEL COMP 303 OVERALL
OVERALL HEIGHT0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
OUTSIDE DIAMETER0.612 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
313-47-2PC13Interchangeable
interchangeable cross-reference
interchangeable
BS4-1372PC13Interchangeable
interchangeable cross-reference
interchangeable
D64Interchangeable
interchangeable cross-reference
interchangeable
AN-6290-4Interchangeable
interchangeable cross-reference
interchangeable
AS28778-4Interchangeable
interchangeable cross-reference
interchangeable
910423-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P21338-001-01?
P21338-001-01 is a WASHER,SPRING TENSION.
What parts can replace P21338-001-01?
There are 7 known substitutes for P21338-001-01: 313-47-2PC13, BS4-1372PC13, D64 and 4 more. Substitute compatibility should be verified for your specific system.
Is P21338-001-01 still available?
P21338-001-01 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026