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B4040772-1 — CLAMP,BLOCK,SECTION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B4040772-1: CLAMP,BLOCK,SECTION.

The CLAMP,BLOCK,SECTION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, block_height: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN, overall_width: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN, overall_length: 3.110 INCHES NOMINAL3.110 INCHES NOMINAL IN, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S), surface_treatment: CHROMATE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-280-6244, 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
B4040772-1
NSN: 5340-01-280-6244
FSC: 5340 — Hardware, Commercial
CAGE: 56996 — DEPARTMENT OF THE ARMY HQ UNITED STATES ARMY COMMUNICATIONS RESEARCH AND DEVELOPMENT COMMAND (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
block_height0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
overall_width0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
overall_length3.110 INCHES NOMINAL3.110 INCHES NOMINAL IN
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
surface_treatmentCHROMATE
clamping_hole_diameter0.136 INCHES NOMINAL ALL HOLES IN
clamping_hole_quantity44
mounting_hole_diameter0.134 INCHES MINIMUM AND 0.134 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
mounting_hole_quantity22
material_document_and_classificationQQ-A-225/6,T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-280-6244
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B4040772-1 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: 44
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE
•
BLOCK HEIGHT: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.134 INCHES MINIMUM AND 0.134 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY22
CLAMPING HOLE QUANTITY44
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE
BLOCK HEIGHT0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.134 INCHES MINIMUM AND 0.134 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
OVERALL LENGTH3.110 INCHES NOMINAL3.110 INCHES NOMINAL IN
OVERALL WIDTH0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
CLAMPING HOLE DIAMETER0.136 INCHES NOMINAL ALL HOLES IN
MOUNTING FACILITYUNTHREADED HOLE(S)UNTHREADED HOLE(S)
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B4040772-1?
B4040772-1 is a CLAMP,BLOCK,SECTION.
What is the NSN for B4040772-1?
B4040772-1 is cataloged in the U.S. Government catalog under NSN 5340-01-280-6244. 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.