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BL644 — CHAIN,LEAF

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BL644: CHAIN,LEAF.

The CHAIN,LEAF is a the manufacturer industrial component. Key specifications include material: STEEL, link_style: 4 X 4, effective_length: 7.0625 FEET NOMINAL FT, link_plate_width: 0.718 INCHES NOMINAL IN, link_nominal_width: 1.2180 INCHES IN, pin_fastening_method: RIVETED. This part is cataloged in the U.S.

Government catalog under NSN 5320-01-143-6690, 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
BL644
NSN: 5320-01-143-6690
NIINs: 011436690, 012664260, 014362288
FSC: 5320 — Rivets
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)
SPECIFICATIONS
materialSTEEL
link_style4 X 4
effective_length7.0625 FEET NOMINAL FT
link_plate_width0.718 INCHES NOMINAL IN
link_row_quantity1
link_nominal_width1.2180 INCHES IN
pin_fastening_methodRIVETED
nominal_pitch_distance0.750 INCHES IN
minimum_tensile_strength22000 POUNDS PER SQUARE INCH LBS
link_pin_nominal_diameter0.3120 INCHES IN
link_plate_nominal_thickness0.1250 INCHES IN
NSN5320-01-143-6690
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CHAIN,LEAF TITLE COMPONENT PN BL644 MFR CHAIN,LEAF
SUBSTITUTES & CROSS-REFERENCES 2
ST3M782-4-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BL170-8-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BL644?
BL644 is a CHAIN,LEAF.
What parts can replace BL644?
There are 2 known substitutes for BL644: ST3M782-4-4, BL170-8-4. Substitute compatibility should be verified for your specific system.
What is the NSN for BL644?
BL644 is cataloged in the U.S. Government catalog under NSN 5320-01-143-6690. This indicates validated use in U.S. government and defense supply chains.
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