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731243PC8 — PIN,GROOVED,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

731243PC8: PIN,GROOVED,HEADLESS.

The PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, material: STEEL COMP 8640 OVERALL, overall_length: 0.937 INCHES NOMINAL IN, undercut_width: 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL, effective_length: 0.781 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-210-0839, 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
731243PC8
NSN: 5315-00-210-0839
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
diameter0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
materialSTEEL COMP 8640 OVERALL
overall_length0.937 INCHES NOMINAL IN
undercut_width0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
effective_length0.781 INCHES NOMINAL IN
style_designatorGROOVE
surface_treatmentPHOSPHATE OVERALL
undercut_diameter0.290 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-210-0839
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 731243PC8 · 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
•
UNDERCUT DIAMETER: 0.290 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: GROOVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
EFFECTIVE LENGTH: 0.781 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.290 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
OVERALL LENGTH0.937 INCHES NOMINAL IN
EFFECTIVE LENGTH0.781 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL COMP 8640 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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 731243PC8?
731243PC8 is a PIN,GROOVED,HEADLESS.
What is the NSN for 731243PC8?
731243PC8 is cataloged in the U.S. Government catalog under NSN 5315-00-210-0839. 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.