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12948171 — CLAMP,BLOCK,SECTION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12948171: CLAMP,BLOCK,SECTION.

The CLAMP,BLOCK,SECTION is a the manufacturer industrial component. Key specifications include block_height: 0.720 INCHES MINIMUM AND 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM0.780 INCHES MAXIMUM IN, overall_width: 0.940 INCHES MINIMUM AND 0.940 INCHES MINIMUM AND 1.060 INCHES MAXIMUM1.060 INCHES MAXIMUM IN, overall_length: 9.750 INCHES MINIMUM AND 9.750 INCHES MINIMUM AND 9.870 INCHES MAXIMUM9.870 INCHES MAXIMUM IN, style_designator: RECTANGULAR, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S), clamping_hole_diameter: 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM SECOND HOLE IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-354-9678, 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
12948171
NSN: 5340-01-354-9678
FSC: 5340 — Hardware, Commercial
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
block_height0.720 INCHES MINIMUM AND 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM0.780 INCHES MAXIMUM IN
overall_width0.940 INCHES MINIMUM AND 0.940 INCHES MINIMUM AND 1.060 INCHES MAXIMUM1.060 INCHES MAXIMUM IN
overall_length9.750 INCHES MINIMUM AND 9.750 INCHES MINIMUM AND 9.870 INCHES MAXIMUM9.870 INCHES MAXIMUM IN
style_designatorRECTANGULAR
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
clamping_hole_diameter0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM SECOND HOLE IN
clamping_hole_quantity66
mounting_hole_diameter0.350 INCHES MINIMUM AND 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM0.410 INCHES MAXIMUM IN
mounting_hole_quantity33
distance_from_end_to_first_clamping_hole_center2.505 INCHES NOMINAL IN
distance_from_end_to_first_mounting_hole_center0.625 INCHES NOMINAL IN
distance_from_center_of_mounting_hole_to_edge_along_the_width0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
NSN5340-01-354-9678
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12948171 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: 33
•
CLAMPING HOLE QUANTITY: 66
•
CENTER TO CENTER DISTANCE BETWEEN FIRST AND FOURTH CLAMPING HOLES: 3.370 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER: 2.505 INCHES NOMINAL IN
•
BLOCK HEIGHT: 0.720 INCHES MINIMUM AND 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM0.780 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: RECTANGULAR
•
MOUNTING HOLE DIAMETER: 0.350 INCHES MINIMUM AND 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM0.410 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY33
CLAMPING HOLE QUANTITY66
CENTER TO CENTER DISTANCE BETWEEN FIRST AND FOURTH CLAMPING HOLES3.370 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER2.505 INCHES NOMINAL IN
BLOCK HEIGHT0.720 INCHES MINIMUM AND 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM0.780 INCHES MAXIMUM IN
STYLE DESIGNATORRECTANGULAR
MOUNTING HOLE DIAMETER0.350 INCHES MINIMUM AND 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM0.410 INCHES MAXIMUM IN
OVERALL LENGTH9.750 INCHES MINIMUM AND 9.750 INCHES MINIMUM AND 9.870 INCHES MAXIMUM9.870 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN FIRST AND THIRD MOUNTING HOLES7.804 INCHES NOMINAL7.804 INCHES NOMINAL IN
OVERALL WIDTH0.940 INCHES MINIMUM AND 0.940 INCHES MINIMUM AND 1.060 INCHES MAXIMUM1.060 INCHES MAXIMUM 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12948171?
12948171 is a CLAMP,BLOCK,SECTION.
What is the NSN for 12948171?
12948171 is cataloged in the U.S. Government catalog under NSN 5340-01-354-9678. 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.