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Technical Data Sheet
PartsTable / COMPONENT / 01042139
01042139 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: COBALT ALLOY, usage_design: EXTERNAL, inside_diameter: 0.204 INCHES NOMINAL IN, outside_diameter: 0.387 INCHES NOMINAL IN, material_diameter: 0.029 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-830-2139, 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
01042139
NSN: 5325-00-830-2139
FSC: 5325
CAGE: 0NEM2 — SZCZYPSKI, MICHAEL (USA)
SPECIFICATIONS
materialCOBALT ALLOY
usage_designEXTERNAL
inside_diameter0.204 INCHES NOMINAL IN
outside_diameter0.387 INCHES NOMINAL IN
material_diameter0.029 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationELGILOY FSCM 20209 MFR REF SINGLE MATERIAL RESPONSE
NSN5325-00-830-2139
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 01042139 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INSIDE DIAMETER: 0.204 INCHES NOMINAL IN
•
MATERIAL: COBALT ALLOY
•
MATERIAL DOCUMENT AND CLASSIFICATION: ELGILOY FSCM 20209 MFR REF SINGLE MATERIAL RESPONSE
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.387 INCHES NOMINAL IN
•
MATERIAL DIAMETER: 0.029 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.204 INCHES NOMINAL IN
MATERIALCOBALT ALLOY
MATERIAL DOCUMENT AND CLASSIFICATIONELGILOY FSCM 20209 MFR REF SINGLE MATERIAL RESPONSE
CASEHARDENING INDICATORNOT CASEHARDENED
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.387 INCHES NOMINAL IN
MATERIAL DIAMETER0.029 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
19415Interchangeable
interchangeable cross-reference
interchangeable
4NA220Interchangeable
interchangeable cross-reference
interchangeable
MC289-20000Interchangeable
interchangeable cross-reference
interchangeable
0194150003Interchangeable
interchangeable cross-reference
interchangeable
BACF34D5RInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 01042139?
01042139 is a RING,RETAINING.
What parts can replace 01042139?
There are 5 known substitutes for 01042139: 19415, 4NA220, MC289-20000 and 2 more. Substitute compatibility should be verified for your specific system.
Is 01042139 still available?
01042139 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026