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TKR-7 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TKR-7: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPLIT, usage_design: EXTERNAL, outside_diameter: 0.875 INCHES NOMINAL IN, surface_treatment: NICKEL, unit_package_type: BOX. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-442-5645, 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
TKR-7
NSN: 5325-01-442-5645
FSC: 5325 — Fastening Devices
CAGE: 55543 — LUCKY LINE PRODUCTS, INC DIV LUCKY LINE PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPLIT
usage_designEXTERNAL
outside_diameter0.875 INCHES NOMINAL IN
surface_treatmentNICKEL
unit_package_typeBOX
casehardening_indicatorNOT CASEHARDENED
part_name_assigned_by_controlling_agencySPLIT KEY RING
NSN5325-01-442-5645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TKR-7 · 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
•
USAGE DESIGN: EXTERNAL
•
UNIT PACKAGE TYPE: BOX
•
OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: SPLIT
•
SURFACE TREATMENT: NICKEL
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
UNIT PACKAGE TYPEBOX
OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPLIT
SURFACE TREATMENTNICKEL
PART NAME ASSIGNED BY CONTROLLING AGENCYSPLIT KEY RING
MATERIALSTEEL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TKR-7?
TKR-7 is a RING,RETAINING.
What is the NSN for TKR-7?
TKR-7 is cataloged in the U.S. Government catalog under NSN 5325-01-442-5645. 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.