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511981PC2 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

511981PC2: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.130 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN, diameter: 0.4357 INCHES MINIMUM AND 0.4368 INCHES MAXIMUM IN, material: STEEL COMP 1040 OVERALL, head_style: PAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION), surface_finish: 32.0 MICROINCHES LONG SHANK, undercut_width: 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5315-00-276-5316, 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
511981PC2
NSN: 5315-00-276-5316
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
height0.130 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
diameter0.4357 INCHES MINIMUM AND 0.4368 INCHES MAXIMUM IN
materialSTEEL COMP 1040 OVERALL
head_stylePAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION)
surface_finish32.0 MICROINCHES LONG SHANK
undercut_width0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
first_end_styleCHAMFERED
effective_length2.543 INCHES MINIMUM AND 2.548 INCHES MAXIMUM IN
special_features0.4381 IN. TO 0.4383 IN. DIA OF SHANK FROM HEAD 1.73 IN. TO 1.76 IN. LG IN
style_designatorGROOVE
pin_head_diameter0.625 INCHES NOMINAL IN
under_head_length2.700 INCHES NOMINAL IN
NSN5315-00-276-5316
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 511981PC2 · 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 FINISH: 32.0 MICROINCHES LONG SHANK
•
UNDERCUT WIDTH: 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.410 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
•
UNDER HEAD LENGTH: 2.700 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
STYLE DESIGNATOR: GROOVE
•
PIN HEAD DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES LONG SHANK
UNDERCUT WIDTH0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.410 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
UNDER HEAD LENGTH2.700 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
STYLE DESIGNATORGROOVE
PIN HEAD DIAMETER0.625 INCHES NOMINAL IN
DIAMETER0.4357 INCHES MINIMUM AND 0.4368 INCHES MAXIMUM IN
FIRST END TAPER ANGLE45.0 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.
5315-00-000-1037 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 511981PC2?
511981PC2 is a PIN,GROOVED,HEADED.
What is the NSN for 511981PC2?
511981PC2 is cataloged in the U.S. Government catalog under NSN 5315-00-276-5316. 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.