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400974 — INSULATION,DUCT,AIRCRAFT

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

400974: INSULATION,DUCT,AIRCRAFT.

The INSULATION,DUCT,AIRCRAFT is a the manufacturer industrial component. Key specifications include width: 2.250 INCHES NOMINAL IN, height: 0.562 INCHES NOMINAL IN, special_features: 16.560 IN. LG FULLY RETRACTED IN, surface_treatment: CADMIUM AND CHROMATE, fsc_application_data: FIXED GROUND RADAR SYSTEM AN/FPN 62.

This part is cataloged in the U.S. Government catalog under NSN 5340-00-005-2051, 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
MRO→ MRO_GENERAL→ 400974
NSN: 5340-00-005-2051
NIINs: 000052051, 000664496, 008086566, 008598643, 016873275
FSC: 5340 — Hardware, Commercial
CAGE: 05236 — JONATHAN ENGINEERED SOLUTIONS CORP. DBA JONATHAN ENGINEERED SOLUTIONS (USA)
SPECIFICATIONS
width2.250 INCHES NOMINAL IN
height0.562 INCHES NOMINAL IN
special_features16.560 IN. LG FULLY RETRACTED IN
surface_treatmentCADMIUM AND CHROMATE
fsc_application_dataFIXED GROUND RADAR SYSTEM AN/FPN 62
material_document_and_classificationQQ-S-631, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-634, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-637 FED SPEC ALL MATERIAL RESPONSES
NSN5340-00-005-2051
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 400974 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
•
FSC APPLICATION DATA: FIXED GROUND RADAR SYSTEM AN/FPN 62
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-631, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-634, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-637 FED SPEC ALL MATERIAL RESPONSES
•
HEIGHT: 0.562 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
•
WIDTH: 2.250 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1109 OR STEEL COMP 1110 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1119 OR STEEL COMP 1132 OR STEEL COMP 1137 OR STEEL COMP 1139 OR STEEL COMP 1140 OR STEEL COMP 1141 OR STEEL COMP 1144 OR STEEL COMP 1145 OR STEEL COMP 1146 OR STEEL COMP 1151 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1215 OR STEEL COMP B1111 OR STEEL COMP B1112 OR STEEL COMP B1113 OR STEEL COMP 12L14
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAFIXED GROUND RADAR SYSTEM AN/FPN 62
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-631, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-634, COMP 1018-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-637 FED SPEC ALL MATERIAL RESPONSES
HEIGHT0.562 INCHES NOMINAL IN
SPECIAL FEATURES16.560 IN. LG FULLY RETRACTED IN
SURFACE TREATMENTCADMIUM AND CHROMATE
WIDTH2.250 INCHES NOMINAL IN
MATERIALSTEEL COMP 1018 OR STEEL COMP 1109 OR STEEL COMP 1110 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1119 OR STEEL COMP 1132 OR STEEL COMP 1137 OR STEEL COMP 1139 OR STEEL COMP 1140 OR STEEL COMP 1141 OR STEEL COMP 1144 OR STEEL COMP 1145 OR STEEL COMP 1146 OR STEEL COMP 1151 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1215 OR STEEL COMP B1111 OR STEEL COMP B1112 OR STEEL COMP B1113 OR STEEL COMP 12L14
SUBSTITUTES & CROSS-REFERENCES 1
483729-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 400974?
400974 is a INSULATION,DUCT,AIRCRAFT. It is classified as a MRO (MRO_GENERAL).
What parts can replace 400974?
There is 1 known substitute for 400974: 483729-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 400974?
400974 is cataloged in the U.S. Government catalog under NSN 5340-00-005-2051. 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.