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138083 ✓ 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 BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include height: 0.090 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, material: STEEL OVERALL, cup_width: 1.0938 INCHES NOMINAL IN, cone_width: 1.4063 INCHES NOMINAL IN, head_style: FLAT CHAMFER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-013-8083, 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
138083
NSN: 5315-00-013-8083
FSC: 5315
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
height0.090 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
materialSTEEL OVERALL
cup_width1.0938 INCHES NOMINAL IN
cone_width1.4063 INCHES NOMINAL IN
head_styleFLAT CHAMFER
bore_diameter4.7500 INCHES NOMINAL IN
overall_width1.4375 INCHES NOMINAL IN
chamfer_length0.060 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
features_providedCASEHARDENED
NSN5315-00-013-8083
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 138083 · 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
•
HEIGHT: 0.094 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
PIN CHAMFER ANGLE: 15.0 DEGREES NOMINAL
•
MATERIAL: STEEL COMP 1010 OR STEEL COMP B1111 OVERALL
•
FIRST HOLE DIAMETER: 0.0781 INCHES NOMINAL IN
•
HEAD STYLE: FLAT
•
CHAMFER LENGTH: 0.062 INCHES NOMINAL IN
•
DIAMETER: 0.250 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
HEIGHT0.094 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
PIN CHAMFER ANGLE15.0 DEGREES NOMINAL
MATERIALSTEEL COMP 1010 OR STEEL COMP B1111 OVERALL
FIRST HOLE DIAMETER0.0781 INCHES NOMINAL IN
HEAD STYLEFLAT
CHAMFER LENGTH0.062 INCHES NOMINAL IN
DIAMETER0.250 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN0.125 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
138083Interchangeable
interchangeable cross-reference
interchangeable
6408GXInterchangeable
interchangeable cross-reference
interchangeable
HA845Interchangeable
interchangeable cross-reference
interchangeable
805851-2Interchangeable
interchangeable cross-reference
interchangeable
3415Interchangeable
interchangeable cross-reference
interchangeable
H677K001 FIND NO. 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138083?
138083 is a BEARING,ROLLER,TAPERED.
What parts can replace 138083?
There are 9 known substitutes for 138083: 138083, 6408GX, HA845 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 138083?
138083 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-013-8083. 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