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Technical Data Sheet
PartsTable / COMPONENT / 5100-168MD
5100-168MD ✓ 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 ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 1.540 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN, major_thickness: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-803-7321, 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
5100-168MD
NSN: 5325-00-803-7321
FSC: 5325
CAGE: 07382 — ROTOR CLIP COMPANY, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 1066 OR STEEL COMP 1069 OR STEEL COMP 1080 OR STEEL COMP 1072 OR STEEL COMP 1074 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1084 OR STEEL COMP 1086 OR STEEL COMP 1090
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter1.540 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
major_thickness0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD FED STD ALL MATERIAL RESPONSES
NSN5325-00-803-7321
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5100-168MD · 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
•
MAJOR THICKNESS: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
USAGE DESIGN: EXTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD FED STD ALL MATERIAL RESPONSES
•
MATERIAL: STEEL COMP 1066 OR STEEL COMP 1069 OR STEEL COMP 1080 OR STEEL COMP 1072 OR STEEL COMP 1074 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1084 OR STEEL COMP 1086 OR STEEL COMP 1090
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
•
MATERIAL HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
INSIDE DIAMETER: 1.540 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
USAGE DESIGNEXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD FED STD ALL MATERIAL RESPONSES
MATERIALSTEEL COMP 1066 OR STEEL COMP 1069 OR STEEL COMP 1080 OR STEEL COMP 1072 OR STEEL COMP 1074 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1084 OR STEEL COMP 1086 OR STEEL COMP 1090
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
INSIDE DIAMETER1.540 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
RING STYLEEXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
SKA1697Interchangeable
interchangeable cross-reference
interchangeable
U68-5Interchangeable
interchangeable cross-reference
interchangeable
H160925Interchangeable
interchangeable cross-reference
interchangeable
DD423S47-0123PC6Interchangeable
interchangeable cross-reference
interchangeable
DD423S47-0122PC6Interchangeable
interchangeable cross-reference
interchangeable
DD423S47-0103PC6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5100-168MD?
5100-168MD is a RING,RETAINING.
What parts can replace 5100-168MD?
There are 22 known substitutes for 5100-168MD: SKA1697, U68-5, H160925 and 19 more. Substitute compatibility should be verified for your specific system.
Is 5100-168MD still available?
5100-168MD is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026