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6620256 — PIN,GROOVED,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6620256: PIN,GROOVED,HEADLESS.

The PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.188 INCHES NOMINAL IN, overall_length: 0.750 INCHES NOMINAL IN, first_end_style: SQUARE, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL, second_end_style: SQUARE INTERNALLY THREADED, special_features: 0.112-40 UNC-2B THREADED END. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-378-9508, 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
6620256
NSN: 5315-01-378-9508
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter0.188 INCHES NOMINAL IN
overall_length0.750 INCHES NOMINAL IN
first_end_styleSQUARE
hardness_rating40.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
second_end_styleSQUARE INTERNALLY THREADED
special_features0.112-40 UNC-2B THREADED END
style_designatorCIRCULAR GROOVE
first_end_locationUNTHREADED END
second_end_relationship_with_first_endNOT IDENTICAL
NSN5315-01-378-9508
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6620256 · 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
•
FIRST END LOCATION: UNTHREADED END
•
FIRST END STYLE: SQUARE
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: CIRCULAR GROOVE
•
DIAMETER: 0.188 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
TECHNICAL CHARACTERISTICS
FIRST END LOCATIONUNTHREADED END
FIRST END STYLESQUARE
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORCIRCULAR GROOVE
DIAMETER0.188 INCHES NOMINAL IN
OVERALL LENGTH0.750 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SPECIAL FEATURES0.112-40 UNC-2B THREADED END
SECOND END STYLESQUARE INTERNALLY THREADED
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 6620256?
6620256 is a PIN,GROOVED,HEADLESS.
What is the NSN for 6620256?
6620256 is cataloged in the U.S. Government catalog under NSN 5315-01-378-9508. This indicates validated use in U.S. government and defense supply chains.
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