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1851977 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1851977: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1008 OVERALL, shank_length: 1.320 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN, overall_length: 1.720 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN, shank_diameter: 0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN, first_end_style: CHAMFERED, second_end_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-124-1344, 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
1851977
NSN: 5315-01-124-1344
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 1LW55 — BORGWARNER PDS (ANDERSON), L.L.C. (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OVERALL
shank_length1.320 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
overall_length1.720 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN
shank_diameter0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
first_end_styleCHAMFERED
second_end_styleSQUARE
style_designatorSHOULDER
shoulder_diameter0.280 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
first_end_locationCHAMFERED END
second_shank_length0.355 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN
first_end_taper_angle37.0 DEGREES NOMINAL
NSN5315-01-124-1344
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1851977 · 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: 0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
SECOND SHANK DIAMETER: 0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.130 INCHES NOMINAL IN
•
FIRST END LOCATION: CHAMFERED END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: P-44-A FSCM 16764 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: CHAMFERED
•
SHANK LENGTH: 1.320 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDER
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
SECOND SHANK DIAMETER0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.130 INCHES NOMINAL IN
FIRST END LOCATIONCHAMFERED END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONP-44-A FSCM 16764 MFR REF SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLECHAMFERED
SHANK LENGTH1.320 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.720 INCHES MINIMUM AND 1.780 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1851977?
1851977 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 1851977?
1851977 is cataloged in the U.S. Government catalog under NSN 5315-01-124-1344. 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.