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Technical Data Sheet
PartsTable / COMPONENT / MS16555-53
MS16555-53 ✓ 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 OVERALL, shear_strength: 20000 DOUBLE POUND, surface_finish: 16.0 MICROINCHES OUTSIDE DIAMETER, first_end_style: CHAMFERED, hardness_rating: 47.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL, second_end_style: RADIUS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-927-7893, 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
MS16555-53
NSN: 5315-00-927-7893
FSC: 5315
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shear_strength20000 DOUBLE POUND
surface_finish16.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleCHAMFERED
hardness_rating47.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
second_end_styleRADIUS
special_featuresRADIUS END MAY BE CHAMFERED 25 DEGREES
features_providedCASEHARDENED
pin_overall_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
pin_overall_diameter0.3126 INCHES MINIMUM AND 0.3128 INCHES MAXIMUM IN
first_end_taper_angle4.0 DEGREES MINIMUM AND 16.0 DEGREES MAXIMUM
first_end_taper_length0.178 INCHES NOMINAL IN
NSN5315-00-927-7893
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS16555-53 · 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 CORNER RADIUS: 0.039 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.178 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A29 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
FIRST END STYLE: CHAMFERED
•
HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
•
SURFACE FINISH: 16.0 MICROINCHES OUTSIDE DIAMETER
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END CORNER RADIUS0.039 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.178 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A29 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
FIRST END STYLECHAMFERED
HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
SPECIAL FEATURESRADIUS END MAY BE CHAMFERED 25 DEGREES
SURFACE FINISH16.0 MICROINCHES OUTSIDE DIAMETER
FIRST END TAPER ANGLE4.0 DEGREES MINIMUM AND 16.0 DEGREES MAXIMUM
SECOND END STYLERADIUS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
AA1043-4Interchangeable
interchangeable cross-reference
interchangeable
B1216-12Interchangeable
interchangeable cross-reference
interchangeable
16A6198Interchangeable
interchangeable cross-reference
interchangeable
GC875AAU3Interchangeable
interchangeable cross-reference
interchangeable
104715Interchangeable
interchangeable cross-reference
interchangeable
C4394Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16555-53?
MS16555-53 is a PIN,STRAIGHT,HEADLESS.
What parts can replace MS16555-53?
There are 16 known substitutes for MS16555-53: AA1043-4, B1216-12, 16A6198 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16555-53?
MS16555-53 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-927-7893. 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