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PartsTable / COMPONENT / MS51838-106
MS51838-106 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP W112 OR STEEL COMP 1090 OR STEEL COMP 1095 OR STEEL COMP 50100 OVERALL, first_end_style: SQUARE, pin_overall_length: 0.488 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN, pin_overall_diameter: 0.1557 INCHES MINIMUM AND 0.1567 INCHES MAXIMUM IN, second_end_relationship_with_first_end: IDENTICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-5494, 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
MS51838-106
NSN: 5315-00-050-5494
FSC: 5315
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP W112 OR STEEL COMP 1090 OR STEEL COMP 1095 OR STEEL COMP 50100 OVERALL
first_end_styleSQUARE
pin_overall_length0.488 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
pin_overall_diameter0.1557 INCHES MINIMUM AND 0.1567 INCHES MAXIMUM IN
material_document_and_classificationASTM A686 ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR 66 FED STD 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-050-5494
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS51838-106 · 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
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A686 ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR 66 FED STD 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP W112 OR STEEL COMP 1090 OR STEEL COMP 1095 OR STEEL COMP 50100 OVERALL
•
PIN OVERALL DIAMETER: 0.1557 INCHES MINIMUM AND 0.1567 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 0.488 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
•
FIRST END STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A686 ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR 66 FED STD 3RD MATERIAL RESPONSE OR 66 FED STD 4TH MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP W112 OR STEEL COMP 1090 OR STEEL COMP 1095 OR STEEL COMP 50100 OVERALL
PIN OVERALL DIAMETER0.1557 INCHES MINIMUM AND 0.1567 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.488 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
FIRST END STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
3490-3420Interchangeable
interchangeable cross-reference
interchangeable
A-A-59649AInterchangeable
interchangeable cross-reference
interchangeable
EB510-11Interchangeable
interchangeable cross-reference
interchangeable
1037-06Interchangeable
interchangeable cross-reference
interchangeable
1037-05Interchangeable
interchangeable cross-reference
interchangeable
CM/103705Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51838-106?
MS51838-106 is a PIN,STRAIGHT,HEADLESS.
What parts can replace MS51838-106?
There are 6 known substitutes for MS51838-106: 3490-3420, A-A-59649A, EB510-11 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51838-106?
MS51838-106 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-5494. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026