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A7543 — RETAINER,SCREW,INVE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A7543: RETAINER,SCREW,INVE.

The RETAINER,SCREW,INVE is a the manufacturer industrial component. Key specifications include phase: THREE INPUT, inside_width: 0.156 INCHES NOMINAL IN, power_rating: 3.000 HORSEPOWER OUTPUT, inside_length: 1.120 INCHES NOMINAL IN, overall_width: 8.000 INCHES IN, overall_height: 8.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-168-7181, 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
A7543
NSN: 5340-00-168-7181
NIINs: 001687181, 005127262, 013938883
FSC: 5340 — Hardware, Commercial
CAGE: 15814 — CR DANIELS INC (USA)
SPECIFICATIONS
phaseTHREE INPUT
inside_width0.156 INCHES NOMINAL IN
power_rating3.000 HORSEPOWER OUTPUT
inside_length1.120 INCHES NOMINAL IN
overall_width8.000 INCHES IN
overall_height8.000 INCHES IN
overall_length18.000 INCHES IN
mounting_methodFLANGE
painted_featureNOT INCLUDED
enclosure_featureTOTALLY ENCLOSED
surface_treatmentCADMIUM
frequency_in_hertz60.0 INPUT
NSN5340-00-168-7181
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A7543 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
•
INSIDE WIDTH: 0.156 INCHES NOMINAL IN
•
INSIDE LENGTH: 1.120 INCHES NOMINAL IN
•
PAINTED FEATURE: NOT INCLUDED
•
SURFACE TREATMENT: CADMIUM
TECHNICAL CHARACTERISTICS
INSIDE WIDTH0.156 INCHES NOMINAL IN
INSIDE LENGTH1.120 INCHES NOMINAL IN
OVERALL LENGTH1.500 INCHES NOMINAL IN
PAINTED FEATURENOT INCLUDED
SURFACE TREATMENTCADMIUM
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 A7543?
A7543 is a RETAINER,SCREW,INVE.
What is the NSN for A7543?
A7543 is cataloged in the U.S. Government catalog under NSN 5340-00-168-7181. 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.