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MS51838-180 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS51838-180: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1090 OR STEEL COMP 1095 OVERALL, first_end_style: CHAMFERED, surface_treatment: PHOSPHATE ZINC OVERALL, pin_overall_length: 1.738 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN, pin_overall_diameter: 0.1870 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN, first_end_taper_angle: 25.0 DEGREES MINIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-031-4443, 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
MS51838-180
NSN: 5315-01-031-4443
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 1090 OR STEEL COMP 1095 OVERALL
first_end_styleCHAMFERED
surface_treatmentPHOSPHATE ZINC OVERALL
pin_overall_length1.738 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN
pin_overall_diameter0.1870 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
first_end_taper_angle25.0 DEGREES MINIMUM
first_end_taper_length0.005 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
material_document_and_classificationAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
second_end_relationship_with_first_endIDENTICAL
surface_treatment_document_and_classificationMIL-C-16232,TYZ,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-031-4443
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS51838-180 · 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 TAPER LENGTH: 0.005 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-16232,TYZ,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FIRST END STYLE: CHAMFERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
•
FIRST END TAPER ANGLE: 25.0 DEGREES MINIMUM
•
PIN OVERALL DIAMETER: 0.1870 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 1.738 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
TECHNICAL CHARACTERISTICS
FIRST END TAPER LENGTH0.005 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-16232,TYZ,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
FIRST END STYLECHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
FIRST END TAPER ANGLE25.0 DEGREES MINIMUM
PIN OVERALL DIAMETER0.1870 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
PIN OVERALL LENGTH1.738 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
MATERIALSTEEL COMP 1090 OR STEEL COMP 1095 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 1
XX003-3250Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MS51838-180?
MS51838-180 is a PIN,STRAIGHT,HEADLESS.
What parts can replace MS51838-180?
There is 1 known substitute for MS51838-180: XX003-3250. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51838-180?
MS51838-180 is cataloged in the U.S. Government catalog under NSN 5315-01-031-4443. 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.