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10277388 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10277388: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include diameter: 3.500 INCHES NOMINAL IN, material: STEEL COMP 4130 OVERALL, undercut_width: 0.560 INCHES NOMINAL IN, first_end_style: SQUARE, style_designator: GROOVE, surface_treatment: CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-147-7116, 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
10277388
NSN: 5315-01-147-7116
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
diameter3.500 INCHES NOMINAL IN
materialSTEEL COMP 4130 OVERALL
undercut_width0.560 INCHES NOMINAL IN
first_end_styleSQUARE
style_designatorGROOVE
surface_treatmentCADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE OVERALL
first_hole_diameter0.312 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
second_hole_diameter0.312 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
hole_arrangement_styleBOTH END DRILLED
material_document_and_classificationMIL-S-18729 COND N MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-6736 TY 1 COND N MIL SPEC 2ND MATERIAL RESPONSE OVERALL
center_to_center_distance_between_holes3.500 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 1,2,3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TY 3,CL 1,2,DR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-147-7116
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10277388 · 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
•
UNDERCUT WIDTH: 0.560 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 1,2,3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TY 3,CL 1,2,DR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HOLE ARRANGEMENT STYLE: BOTH END DRILLED
•
FIRST END STYLE: SQUARE
•
FIRST HOLE DIAMETER: 0.312 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: GROOVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729 COND N MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-6736 TY 1 COND N MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
DIAMETER: 3.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.560 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 1,2,3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TY 3,CL 1,2,DR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE ARRANGEMENT STYLEBOTH END DRILLED
FIRST END STYLESQUARE
FIRST HOLE DIAMETER0.312 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
STYLE DESIGNATORGROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729 COND N MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-6736 TY 1 COND N MIL SPEC 2ND MATERIAL RESPONSE OVERALL
DIAMETER3.500 INCHES NOMINAL IN
SECOND HOLE DIAMETER0.312 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN HOLES3.500 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10277388?
10277388 is a PIN,GROOVED,HEADED.
What is the NSN for 10277388?
10277388 is cataloged in the U.S. Government catalog under NSN 5315-01-147-7116. 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.