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JCM-10993-021 — CLAMP,BLOCK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

JCM-10993-021: CLAMP,BLOCK.

The CLAMP,BLOCK is a the manufacturer industrial component. Key specifications include material: STEEL, block_height: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN, overall_width: 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN, overall_height: 0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN, overall_length: 2.688 INCHES NOMINAL2.688 INCHES NOMINAL IN, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-253-0127, 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
JCM-10993-021
NSN: 5340-01-253-0127
FSC: 5340 — Hardware, Commercial
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL
block_height1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
overall_width2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
overall_height0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN
overall_length2.688 INCHES NOMINAL2.688 INCHES NOMINAL IN
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
surface_treatmentPAINT
clamping_hole_diameter1.188 INCHES NOMINAL ALL HOLES IN
clamping_hole_quantity11
mounting_hole_diameter0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN
mounting_hole_quantity22
surface_treatment_document_and_classification1303,SYSTEM 22 MIL STD SINGLE TREATMENT RESPONSE
NSN5340-01-253-0127
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: JCM-10993-021 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 22
•
CLAMPING HOLE QUANTITY: 11
•
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER: 1.344 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 1303,SYSTEM 22 MIL STD SINGLE TREATMENT RESPONSE
•
BLOCK HEIGHT: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
•
MOUNTING HOLE DIAMETER: 0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY22
OVERALL HEIGHT0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN
CLAMPING HOLE QUANTITY11
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER1.344 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION1303,SYSTEM 22 MIL STD SINGLE TREATMENT RESPONSE
BLOCK HEIGHT1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN
OVERALL LENGTH2.688 INCHES NOMINAL2.688 INCHES NOMINAL IN
OVERALL WIDTH2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
CLAMPING HOLE DIAMETER1.188 INCHES NOMINAL ALL HOLES IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
7681-45910-009Reference document
Same NSN cross-reference
Reference document — Secondary reference
C-PH-16-1-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is JCM-10993-021?
JCM-10993-021 is a CLAMP,BLOCK.
What parts can replace JCM-10993-021?
There are 2 known substitutes for JCM-10993-021: 7681-45910-009, C-PH-16-1-2. Substitute compatibility should be verified for your specific system.
What is the NSN for JCM-10993-021?
JCM-10993-021 is cataloged in the U.S. Government catalog under NSN 5340-01-253-0127. 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.