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Technical Data Sheet
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201-000-157 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

201-000-157: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: ALUMINUM, outside_diameter: 2.250 INCHES NOMINAL IN, special_features: WIDTH 11/16 INCHES IN, casehardening_indicator: NOT CASEHARDENED, specification/standard_data: 1G3+5-281307 MANUFACTURERS SPECIFICATION CONTROL, part_name_assigned_by_controlling_agency: FACE CAP. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-475-0141, 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
201-000-157
NSN: 5325-01-475-0141
FSC: 5325 — Fastening Devices
CAGE: 06134 — MAG INSTRUMENT, INC. DBA MAG INSTRUMENT INC (USA)
SPECIFICATIONS
materialALUMINUM
outside_diameter2.250 INCHES NOMINAL IN
special_featuresWIDTH 11/16 INCHES IN
casehardening_indicatorNOT CASEHARDENED
specification/standard_data1G3+5-281307 MANUFACTURERS SPECIFICATION CONTROL
part_name_assigned_by_controlling_agencyFACE CAP
NSN5325-01-475-0141
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 201-000-157 · 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
•
OUTSIDE DIAMETER: 2.250 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 1G3+5-281307 MANUFACTURERS SPECIFICATION CONTROL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ALUMINUM
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER2.250 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA1G3+5-281307 MANUFACTURERS SPECIFICATION CONTROL
CASEHARDENING INDICATORNOT CASEHARDENED
SPECIAL FEATURESWIDTH 11/16 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFACE CAP
MATERIALALUMINUM
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
28130700Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 201-000-157?
201-000-157 is a RING,RETAINING.
What parts can replace 201-000-157?
There is 1 known substitute for 201-000-157: 28130700. Substitute compatibility should be verified for your specific system.
What is the NSN for 201-000-157?
201-000-157 is cataloged in the U.S. Government catalog under NSN 5325-01-475-0141. 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.