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Technical Data Sheet
PartsTable / COMPONENT / BL-31
BL-31 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

INDEX SHEET SET,LOOSE-LEAF BINDE. Key specifications include width: 8.500 INCHES NOMINAL IN, length: 11.000 INCHES NOMINAL IN, material: LEATHER TAB, tab_marking: 1 TO 31, special_features: RIP PROOF; BLACK TABS; REINFORCED BINDING EDGE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7530-01-316-4455, 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
BL-31
NSN: 7530-01-316-4455
FSC: 7530
CAGE: 86106 — AIGNER INDEX INC (USA)
SPECIFICATIONS
width8.500 INCHES NOMINAL IN
length11.000 INCHES NOMINAL IN
materialLEATHER TAB
tab_marking1 TO 31
special_featuresRIP PROOF; BLACK TABS; REINFORCED BINDING EDGE
ring_perforation_quantity3
NSN7530-01-316-4455
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INDEX SHEET SET,LOOSE-LEAF BINDE TITLE COMPONENT PN BL-31 MFR INDEX SHEET SET,LOOSE-
KEY FEATURES
•
MATERIAL: LEATHER TAB
•
RING PERFORATION QUANTITY: 3
•
TAB MARKING: 1 TO 31
•
WIDTH: 8.500 INCHES NOMINAL IN
•
LENGTH: 11.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESRIP PROOF; BLACK TABS; REINFORCED BINDING EDGE
MATERIALLEATHER TAB
RING PERFORATION QUANTITY3
TAB MARKING1 TO 31
WIDTH8.500 INCHES NOMINAL IN
LENGTH11.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
917 31/64Interchangeable
interchangeable cross-reference
interchangeable
503-S 31/64Interchangeable
interchangeable cross-reference
interchangeable
44031Interchangeable
interchangeable cross-reference
interchangeable
12131Interchangeable
interchangeable cross-reference
interchangeable
11266Interchangeable
interchangeable cross-reference
interchangeable
1144898Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BL-31?
BL-31 is a INDEX SHEET SET,LOOSE-LEAF BINDE.
What parts can replace BL-31?
There are 13 known substitutes for BL-31: 917 31/64, 503-S 31/64, 44031 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BL-31?
BL-31 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7530-01-316-4455. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026