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Technical Data Sheet
900571 ✓ 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 TARGET,BORESIGHT ALIGNMENT is a the manufacturer industrial component. Key specifications include material: PLASTIC, overall_diameter: 1.380 INCHES NOMINAL IN, special_features: PRESSURE SENSITIVE ADHESIVE BACKING LINER THAT CONFORMS TO MIL-P-38477, end_item_identification: TEST PROGRAM,AC-130. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-529-1533, 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
900571
NSN: 5340-00-529-1533
FSC: 5340
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialPLASTIC
overall_diameter1.380 INCHES NOMINAL IN
special_featuresPRESSURE SENSITIVE ADHESIVE BACKING LINER THAT CONFORMS TO MIL-P-38477
end_item_identificationTEST PROGRAM,AC-130
NSN5340-00-529-1533
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 900571 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
FEATURES PROVIDED: BOLT
STYLE DESIGNATOR: BUTTON ACTUATOR
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH: 1.060 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG WIDTH: 1.060 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER: 0.128 INCHES MINIMUM IN
SURFACE TREATMENT: UNABLE TO DECODE
MATERIAL: UNABLE TO DECODE
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDBOLT
STYLE DESIGNATORBUTTON ACTUATOR
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH1.060 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG WIDTH1.060 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.128 INCHES MINIMUM IN
SURFACE TREATMENTUNABLE TO DECODE
MATERIALUNABLE TO DECODE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
100776Interchangeable
interchangeable cross-reference
interchangeable
900571Interchangeable
interchangeable cross-reference
interchangeable
685483-1Interchangeable
interchangeable cross-reference
interchangeable
HK5L6051-1Interchangeable
Same NIIN cross-reference
interchangeable
6QRP28-1Interchangeable
Same NIIN cross-reference
interchangeable
60SK1439Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 900571?
900571 is a TARGET,BORESIGHT ALIGNMENT.
What parts can replace 900571?
There are 7 known substitutes for 900571: 100776, 900571, 685483-1 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 900571?
900571 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-529-1533. This indicates validated use in U.S. government and defense supply chains.
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