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Technical Data Sheet
PartsTable / COMPONENT / 7-211830054
7-211830054 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CLAMP,BLOCK is a the manufacturer industrial component. Key specifications include block_height: 0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN, overall_height: 0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN, overall_length: 3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN, style_designator: RECTANGULAR, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S), clamping_hole_diameter: 0.375 INCHES NOMINAL ALL HOLES 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 5340-01-170-5227, 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
7-211830054
NSN: 5340-01-170-5227
FSC: 5340
CAGE: 02731 — MCDONNELL DOUGLAS HELICOPTER CO INC (USA)
SPECIFICATIONS
block_height0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN
overall_height0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN
overall_length3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN
style_designatorRECTANGULAR
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
clamping_hole_diameter0.375 INCHES NOMINAL ALL HOLES IN
clamping_hole_quantity33
mounting_hole_diameter0.199 INCHES MINIMUM AND 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM0.209 INCHES MAXIMUM IN
mounting_hole_quantity22
distance_from_end_to_first_clamping_hole_center0.870 INCHES NOMINAL IN
distance_from_end_to_first_mounting_hole_center0.310 INCHES NOMINAL IN
center_to_center_distance_between_first_and_third_clamping_holes1.260 INCHES NOMINAL IN
NSN5340-01-170-5227
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7-211830054 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
•
STYLE DESIGNATOR: RECTANGULAR
•
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER: 0.870 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN FIRST AND THIRD CLAMPING HOLES: 1.260 INCHES NOMINAL IN
•
CLAMPING HOLE QUANTITY: 33
•
MOUNTING FACILITY: UNTHREADED HOLE(S)UNTHREADED HOLE(S)
•
MOUNTING HOLE DIAMETER: 0.199 INCHES MINIMUM AND 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM0.209 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN FIRST AND SECOND CLAMPING HOLES: 0.630 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN FIRST AND SECOND MOUNTING HOLES: 2.380 INCHES NOMINAL2.380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORRECTANGULAR
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER0.870 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN FIRST AND THIRD CLAMPING HOLES1.260 INCHES NOMINAL IN
CLAMPING HOLE QUANTITY33
MOUNTING FACILITYUNTHREADED HOLE(S)UNTHREADED HOLE(S)
MOUNTING HOLE DIAMETER0.199 INCHES MINIMUM AND 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM0.209 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN FIRST AND SECOND CLAMPING HOLES0.630 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN FIRST AND SECOND MOUNTING HOLES2.380 INCHES NOMINAL2.380 INCHES NOMINAL IN
CLAMPING HOLE DIAMETER0.375 INCHES NOMINAL ALL HOLES IN
DISTANCE FROM END TO FIRST MOUNTING HOLE CENTER0.310 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
3153Interchangeable
interchangeable cross-reference
interchangeable
703110Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-755Interchangeable
interchangeable cross-reference
interchangeable
ASME B94.19Interchangeable
interchangeable cross-reference
interchangeable
1903Interchangeable
interchangeable cross-reference
interchangeable
E3600PC9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7-211830054?
7-211830054 is a CLAMP,BLOCK.
What parts can replace 7-211830054?
There are 13 known substitutes for 7-211830054: 3153, 703110, GGG-C-755 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7-211830054?
7-211830054 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-170-5227. 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