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Technical Data Sheet
PartsTable / COMPONENT / 5103-25MD
5103-25MD ✓ 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: STEEL, usage_design: EXTERNAL, inside_diameter: 0.206 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN, major_thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN, surface_treatment: CADMIUM, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-200-5234, 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
5103-25MD
NSN: 5325-00-200-5234
FSC: 5325
CAGE: 79136 — TRUARC COMPANY LLC DBA WALDES TRUARC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleC
usage_designEXTERNAL
inside_diameter0.206 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
major_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating67.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 72.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-200-5234
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5103-25MD · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: C
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: CADMIUM
•
MAJOR THICKNESS: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
•
MATERIAL HARDNESS RATING: 67.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 72.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
•
INSIDE DIAMETER: 0.206 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEC
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENTCADMIUM
MAJOR THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
MATERIAL HARDNESS RATING67.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 72.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
INSIDE DIAMETER0.206 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
USAGE DESIGNEXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MIL-R-21248Interchangeable
interchangeable cross-reference
interchangeable
MS16632-4025Interchangeable
interchangeable cross-reference
interchangeable
5103-25Interchangeable
interchangeable cross-reference
interchangeable
4322-31Interchangeable
interchangeable cross-reference
interchangeable
LMU104Interchangeable
interchangeable cross-reference
interchangeable
4322-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5103-25MD?
5103-25MD is a RING,RETAINING.
What parts can replace 5103-25MD?
There are 13 known substitutes for 5103-25MD: MIL-R-21248, MS16632-4025, 5103-25 and 10 more. Substitute compatibility should be verified for your specific system.
Is 5103-25MD still available?
5103-25MD is currently cancelled.
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Last verified: July 2026