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731131PC9 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

731131PC9: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.094 INCHES NOMINAL IN, diameter: 0.307 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN, head_style: FLAT, undercut_width: 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN, first_end_style: CHAMFERED, hardness_rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-210-0784, 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
731131PC9
NSN: 5315-00-210-0784
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
height0.094 INCHES NOMINAL IN
diameter0.307 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
materialSTEEL COMP 1040 OR STEEL COMP 1041 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1044 OR STEEL COMP 1045 OVERALL
head_styleFLAT
undercut_width0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
first_end_styleCHAMFERED
hardness_rating50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
effective_length0.765 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN
style_designatorGROOVE
pin_head_diameter0.500 INCHES NOMINAL IN
surface_treatmentPHOSPHATE MANGANESE OVERALL
under_head_length0.843 INCHES NOMINAL IN
NSN5315-00-210-0784
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 731131PC9 · 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: 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.015 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.288 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
UNDER HEAD LENGTH: 0.843 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
HARDNESS RATING: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: GROOVE
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.015 INCHES NOMINAL IN
UNDERCUT DIAMETER0.288 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
UNDER HEAD LENGTH0.843 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
HARDNESS RATING50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
PIN HEAD DIAMETER0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
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 731131PC9?
731131PC9 is a PIN,GROOVED,HEADED.
What is the NSN for 731131PC9?
731131PC9 is cataloged in the U.S. Government catalog under NSN 5315-00-210-0784. 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.