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Technical Data Sheet
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MS16631-225 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS16631-225: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include departure_from_cited_document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D, criticality_code_justification: ZZZW, departure_from_cited_designator: CLEANED IN ACCORDANCE WITH MIL-I-52211, part_name_assigned_by_controlling_agency: RING,RETAINING. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-133-6156, 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
MS16631-225
NSN: 5325-01-133-6156
NIINs: 011336156, 013564747
FSC: 5325 — Fastening Devices
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
departure_from_cited_designatorCLEANED IN ACCORDANCE WITH MIL-I-52211
part_name_assigned_by_controlling_agencyRING,RETAINING
NSN5325-01-133-6156
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16631-225 · 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: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
USAGE DESIGN: INTERNAL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
•
MINOR THICKNESS: 0.121 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66, COMP 1066 OR 1069 OR 1070 OR 1071 OR 1072 OR 1074 OR 1075 OR 1078 OR 1080 OR 1084 OR 1085 OR 1086 OR 1090 FED STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: BEVELED ONE OUTSIDE CORNER
•
OUTSIDE DIAMETER: 2.460 INCHES MINIMUM AND 2.530 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.092 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
USAGE DESIGNINTERNAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE
MINOR THICKNESS0.121 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66, COMP 1066 OR 1069 OR 1070 OR 1071 OR 1072 OR 1074 OR 1075 OR 1078 OR 1080 OR 1084 OR 1085 OR 1086 OR 1090 FED STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEBEVELED ONE OUTSIDE CORNER
OUTSIDE DIAMETER2.460 INCHES MINIMUM AND 2.530 INCHES MAXIMUM IN
MAJOR THICKNESS0.092 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEINTERNAL
SUBSTITUTES & CROSS-REFERENCES 3
MS16631-2225Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS16631-1225Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
N5002-225Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 MS16631-225?
MS16631-225 is a RING,RETAINING.
What parts can replace MS16631-225?
There are 3 known substitutes for MS16631-225: MS16631-2225, MS16631-1225, N5002-225. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16631-225?
MS16631-225 is cataloged in the U.S. Government catalog under NSN 5325-01-133-6156. This indicates validated use in U.S. government and defense supply chains.
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