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4057968 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4057968: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, overall_length: 1.745 INCHES MINIMUM AND 1.775 INCHES MAXIMUM IN, surface_finish: 16.0 MICROINCHES SHORT SHANK END, first_end_style: CHAMFERED AND COUNTERBORED, second_end_style: COUNTERBORED W/O THRU HOLE, style_designator: SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-171-1986, 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
4057968
NSN: 5315-01-171-1986
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
overall_length1.745 INCHES MINIMUM AND 1.775 INCHES MAXIMUM IN
surface_finish16.0 MICROINCHES SHORT SHANK END
first_end_styleCHAMFERED AND COUNTERBORED
second_end_styleCOUNTERBORED W/O THRU HOLE
style_designatorSHOULDER
first_step_length0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
shoulder_diameter0.4340 INCHES MINIMUM AND 0.4346 INCHES MAXIMUM IN
third_step_length0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
first_end_locationSHORT SHANK END
second_step_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
first_step_diameter0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
NSN5315-01-171-1986
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4057968 · 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 END
•
FIRST END TAPER LENGTH: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
FIRST STEP DIAMETER: 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
•
FIRST END LOCATION: SHORT SHANK END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: PWA256-1,PWA 474,77445 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END COUNTERBORE DIAMETER: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
•
THIRD STEP DIAMETER: 0.3495 INCHES MINIMUM AND 0.3501 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES LONG END
SURFACE FINISH16.0 MICROINCHES SHORT SHANK END
FIRST END TAPER LENGTH0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
FIRST STEP DIAMETER0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
FIRST END LOCATIONSHORT SHANK END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONPWA256-1,PWA 474,77445 MFR REF SINGLE TREATMENT RESPONSE OVERALL
FIRST END COUNTERBORE DIAMETER0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
THIRD STEP DIAMETER0.3495 INCHES MINIMUM AND 0.3501 INCHES MAXIMUM IN
FIRST END STYLECHAMFERED AND COUNTERBORED
SECOND STEP LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4057968?
4057968 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 4057968?
4057968 is cataloged in the U.S. Government catalog under NSN 5315-01-171-1986. This indicates validated use in U.S. government and defense supply chains.
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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.