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A51C34512-11 — PIN,HOLLOW

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A51C34512-11: PIN,HOLLOW.

The PIN,HOLLOW is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-12 OVERALL, first_end_style: COUNTERSUNK, hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL, inside_diameter: 1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, pin_overall_length: 2.240 INCHES MINIMUM AND 2.245 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-003-3929, 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
A51C34512-11
NSN: 5315-00-003-3929
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP XM-12 OVERALL
first_end_styleCOUNTERSUNK
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
inside_diameter1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
pin_overall_length2.240 INCHES MINIMUM AND 2.245 INCHES MAXIMUM IN
pin_overall_diameter1.8740 INCHES MINIMUM AND 1.8743 INCHES MAXIMUM IN
first_end_countersink_angle60.0 DEGREES NOMINAL
criticality_code_justificationACHU AND AARX
first_end_countersink_diameter1.122 INCHES NOMINAL IN
material_document_and_classificationAMS5659 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-003-3929
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A51C34512-11 · 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
•
FIRST END COUNTERSINK DIAMETER: 1.122 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: COUNTERSUNK
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
CRITICALITY CODE JUSTIFICATION: ACHU AND AARX
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5659 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
PIN OVERALL DIAMETER: 1.8740 INCHES MINIMUM AND 1.8743 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 2.240 INCHES MINIMUM AND 2.245 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FIRST END COUNTERSINK DIAMETER1.122 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLECOUNTERSUNK
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
CRITICALITY CODE JUSTIFICATIONACHU AND AARX
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5659 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL DIAMETER1.8740 INCHES MINIMUM AND 1.8743 INCHES MAXIMUM IN
PIN OVERALL LENGTH2.240 INCHES MINIMUM AND 2.245 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END COUNTERSINK ANGLE60.0 DEGREES NOMINAL
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 A51C34512-11?
A51C34512-11 is a PIN,HOLLOW.
What is the NSN for A51C34512-11?
A51C34512-11 is cataloged in the U.S. Government catalog under NSN 5315-00-003-3929. This indicates validated use in U.S. government and defense supply chains.
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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.