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MS16632-56 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS16632-56: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, usage_design: EXTERNAL, inside_diameter: 0.491 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN, major_thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN, casehardening_indicator: NOT CASEHARDENED, material_hardness_rating: 66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-282-5344, 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
MS16632-56
NSN: 5325-00-282-5344
FSC: 5325 — Fastening Devices
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
ring_styleC
usage_designEXTERNAL
inside_diameter0.491 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
major_thickness0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
NSN5325-00-282-5344
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16632-56 · 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: 66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
•
USAGE DESIGN: EXTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MAJOR THICKNESS: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.491 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: C
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
USAGE DESIGNEXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
INSIDE DIAMETER0.491 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEC
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 8
N1800-56Reference document
Same NSN cross-reference
Reference document — Secondary reference
5103-56Reference document
Same NSN cross-reference
Reference document — Secondary reference
N1800-56ASReference document
Same NSN cross-reference
Reference document — Secondary reference
22327XReference document
Same NSN cross-reference
Reference document — Secondary reference
12Z5040-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
709051PC48Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS16632-56?
MS16632-56 is a RING,RETAINING.
What parts can replace MS16632-56?
There are 8 known substitutes for MS16632-56: N1800-56, 5103-56, N1800-56AS and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16632-56?
MS16632-56 is cataloged in the U.S. Government catalog under NSN 5325-00-282-5344. 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.