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A51H20621-21 — PIN,HOLLOW

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A51H20621-21: PIN,HOLLOW.

The PIN,HOLLOW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, first_end_style: SQUARE, hardness_rating: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL, inside_diameter: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, surface_treatment: CHROMIUM OVERALL, pin_overall_length: 1.227 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-003-3916, 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
A51H20621-21
NSN: 5315-00-003-3916
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleSQUARE
hardness_rating46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
inside_diameter0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
surface_treatmentCHROMIUM OVERALL
pin_overall_length1.227 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN
pin_overall_diameter0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
material_document_and_classification4330VMOD G-1010 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
surface_treatment_document_and_classificationQQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-003-3916
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A51H20621-21 · 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: QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: SQUARE
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 4330VMOD G-1010 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
PIN OVERALL DIAMETER: 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 1.227 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
INSIDE DIAMETER: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLESQUARE
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION4330VMOD G-1010 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL DIAMETER0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
PIN OVERALL LENGTH1.227 INCHES MINIMUM AND 1.237 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
INSIDE DIAMETER0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMIUM OVERALL
TEST DATA DOCUMENT81349-MIL-I-6863 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-001-5341 5315-00-001-5342 5315-00-003-3357 5315-00-005-0493 5315-00-005-0494 5315-00-006-5178 5315-00-009-0013 5315-00-009-5722
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51H20621-21?
A51H20621-21 is a PIN,HOLLOW.
What is the NSN for A51H20621-21?
A51H20621-21 is cataloged in the U.S. Government catalog under NSN 5315-00-003-3916. This indicates validated use in U.S. government and defense supply chains.
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