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172MDG1 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

172MDG1: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1060, end_style: VERTEX OUTSIDE PERIPHERY, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 2.857 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN, major_thickness: 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-281-6658, 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
172MDG1
NSN: 5325-00-281-6658
FSC: 5325 — Fastening Devices
CAGE: 05415 — LINDE LIFT TRUCK CORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 1060
end_styleVERTEX OUTSIDE PERIPHERY
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter2.857 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN
major_thickness0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
outside_diameter3.353 INCHES MINIMUM AND 3.391 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A576 1060 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-281-6658
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 172MDG1 · 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
•
MATERIAL HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: EXTERNAL
•
END STYLE: VERTEX OUTSIDE PERIPHERY
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576 1060 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 3.353 INCHES MINIMUM AND 3.391 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.857 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
USAGE DESIGNEXTERNAL
END STYLEVERTEX OUTSIDE PERIPHERY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A576 1060 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER3.353 INCHES MINIMUM AND 3.391 INCHES MAXIMUM IN
MAJOR THICKNESS0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
INSIDE DIAMETER2.857 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SUBSTITUTES & CROSS-REFERENCES 1
6750337Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 172MDG1?
172MDG1 is a RING,RETAINING.
What parts can replace 172MDG1?
There is 1 known substitute for 172MDG1: 6750337. Substitute compatibility should be verified for your specific system.
What is the NSN for 172MDG1?
172MDG1 is cataloged in the U.S. Government catalog under NSN 5325-00-281-6658. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.