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PartsTable / COMPONENT / MS16628-4068
MS16628-4068 ✓ 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 material: STEEL CORROSION RESISTING, ring_style: EXTERNAL BOWED, usage_design: EXTERNAL, end_play_takeup: 0.020 INCHES MAXIMUM IN, inside_diameter: 0.635 INCHES NOMINAL IN, major_thickness: 0.042 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-576-9547, 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
MS16628-4068
NSN: 5325-00-576-9547
FSC: 5325
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleEXTERNAL BOWED
usage_designEXTERNAL
end_play_takeup0.020 INCHES MAXIMUM IN
inside_diameter0.635 INCHES NOMINAL IN
major_thickness0.042 INCHES NOMINAL IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-576-9547
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16628-4068 · 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
•
END PLAY TAKEUP: 0.020 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING
•
SURFACE TREATMENT: PASSIVATE
•
USAGE DESIGN: EXTERNAL
•
RING STYLE: EXTERNAL BOWED
•
MATERIAL HARDNESS RATING: 63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
•
INSIDE DIAMETER: 0.635 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
END PLAY TAKEUP0.020 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING
SURFACE TREATMENTPASSIVATE
USAGE DESIGNEXTERNAL
RING STYLEEXTERNAL BOWED
MATERIAL HARDNESS RATING63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM
INSIDE DIAMETER0.635 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CASEHARDENING INDICATORNOT CASEHARDENED
MAJOR THICKNESS0.042 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
26805Interchangeable
interchangeable cross-reference
interchangeable
C111-191Interchangeable
interchangeable cross-reference
interchangeable
CEX49-764Interchangeable
interchangeable cross-reference
interchangeable
F811Interchangeable
interchangeable cross-reference
interchangeable
4610015551Interchangeable
interchangeable cross-reference
interchangeable
1199900151Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16628-4068?
MS16628-4068 is a RING,RETAINING.
What parts can replace MS16628-4068?
There are 21 known substitutes for MS16628-4068: 26805, C111-191, CEX49-764 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16628-4068?
MS16628-4068 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-576-9547. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026