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5543997 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5543997: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.075 INCHES NOMINAL IN, diameter: 0.489 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN, material: ALUMINUM ALLOY 6061 OVERALL, head_style: FLAT CHAMFER, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER, undercut_width: 0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-302-9980, 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
5543997
NSN: 5315-01-302-9980
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
height0.075 INCHES NOMINAL IN
diameter0.489 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN
materialALUMINUM ALLOY 6061 OVERALL
head_styleFLAT CHAMFER
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER
undercut_width0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
first_end_styleSQUARE
effective_length0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN
special_featuresCOLOR BLACK,THICKNESS OF COATING 0.0015 INCH MINIMUM 0.0025 INCH MAXIMUM IN
style_designatorGROOVE
pin_head_diameter0.750 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
NSN5315-01-302-9980
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5543997 · 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: 63.0 MICROINCHES HEAD BEARING SURFACE
•
UNDERCUT WIDTH: 0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.466 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
UNDER HEAD LENGTH: 0.325 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
•
STYLE DESIGNATOR: GROOVE
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES HEAD BEARING SURFACE
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER
UNDERCUT WIDTH0.039 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.466 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY3 CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
UNDER HEAD LENGTH0.325 INCHES NOMINAL IN
FIRST END STYLESQUARE
STYLE DESIGNATORGROOVE
PIN HEAD DIAMETER0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/8,COND T6 FED SPEC SINGLE MATERIAL RESPONSE 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5543997?
5543997 is a PIN,GROOVED,HEADED.
What is the NSN for 5543997?
5543997 is cataloged in the U.S. Government catalog under NSN 5315-01-302-9980. 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.