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223988 — GASKET KIT

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

223988: GASKET KIT.

The GASKET KIT is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: ANGULAR CAP, usage_design: INTERNAL, inside_diameter: 4.656 INCHES NOMINAL IN, major_thickness: 0.065 INCHES NOMINAL IN, outside_diameter: 5.031 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-763-8872, 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
223988
NSN: 5325-00-763-8872
NIINs: 007638872, 011166295
FSC: 5325 — Fastening Devices
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL
ring_styleANGULAR CAP
usage_designINTERNAL
inside_diameter4.656 INCHES NOMINAL IN
major_thickness0.065 INCHES NOMINAL IN
outside_diameter5.031 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationFED STD NO. 66 AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-763-8872
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 223988 · 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: INTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD NO. 66 AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 5.031 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.065 INCHES NOMINAL IN
•
INSIDE DIAMETER: 4.656 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: ANGULAR CAP
TECHNICAL CHARACTERISTICS
USAGE DESIGNINTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD NO. 66 AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER5.031 INCHES NOMINAL IN
MAJOR THICKNESS0.065 INCHES NOMINAL IN
INSIDE DIAMETER4.656 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEANGULAR CAP
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
7-223988Reference document
Same NSN cross-reference
Reference document — Secondary reference
304623C1Reference 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 223988?
223988 is a GASKET KIT.
What parts can replace 223988?
There are 2 known substitutes for 223988: 7-223988, 304623C1. Substitute compatibility should be verified for your specific system.
What is the NSN for 223988?
223988 is cataloged in the U.S. Government catalog under NSN 5325-00-763-8872. 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.