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657657 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

657657: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_length: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, overall_length: 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN, shank_diameter: 0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES SHOULDER END, first_end_style: CHAMFERED. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-177-7682, 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
657657
NSN: 5315-00-177-7682
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_length0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
overall_length0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
shank_diameter0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES SHOULDER END
first_end_styleCHAMFERED
style_designatorSHOULDER
shoulder_diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
first_end_locationBOTH ENDS
second_shank_length0.375 INCHES NOMINAL IN
first_end_taper_angle13.0 DEGREES MINIMUM AND 17.0 DEGREES MAXIMUM
second_shank_diameter0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
NSN5315-00-177-7682
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 657657 · 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
•
SHANK DIAMETER: 0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
•
SECOND SHANK DIAMETER: 0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
•
SURFACE FINISH: 63.0 MICROINCHES SHOULDER END
•
FIRST END TAPER LENGTH: 0.060 INCHES NOMINAL IN
•
FIRST END LOCATION: BOTH ENDS
•
FIRST END STYLE: CHAMFERED
•
SHANK LENGTH: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
SECOND SHANK DIAMETER0.18725 INCHES MINIMUM AND 0.18775 INCHES MAXIMUM IN
SURFACE FINISH63.0 MICROINCHES SHOULDER END
SURFACE FINISH32.0 MICROINCHES BEARING
FIRST END TAPER LENGTH0.060 INCHES NOMINAL IN
FIRST END LOCATIONBOTH ENDS
FIRST END STYLECHAMFERED
SHANK LENGTH0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI TS8125 (INVALID) FED STD 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 657657?
657657 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 657657?
657657 is cataloged in the U.S. Government catalog under NSN 5315-00-177-7682. This indicates validated use in U.S. government and defense supply chains.
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