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Technical Data Sheet
PartsTable / COMPONENT / BL33
BL33 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CLINCH PLATE,TURNBUTTON FASTENER. Key specifications include material: COPPER ALLOY OVERALL, plate_diameter: 0.700 INCHES NOMINAL IN, surface_treatment: NICKEL AND OXIDE FILM OVERALL, hole_inside_diameter: 0.250 INCHES NOMINAL IN, plate_overall_height: 0.047 INCHES NOMINAL IN, clinch_plate_diameter: 0.700 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-297-5106, 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
BL33
NSN: 5325-00-297-5106
FSC: 5325
CAGE: 61864 — TRW ASSEMBLIES AND FASTENERS GROUP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
plate_diameter0.700 INCHES NOMINAL IN
surface_treatmentNICKEL AND OXIDE FILM OVERALL
hole_inside_diameter0.250 INCHES NOMINAL IN
plate_overall_height0.047 INCHES NOMINAL IN
clinch_plate_diameter0.700 INCHES NOMINAL IN
turnbutton_clinch_plate_styleCLINCH PLATE
snap_fastener_clinch_plate_styleCLINCH PLATE
NSN5325-00-297-5106
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BL33 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: COPPER ALLOY OVERALL
•
PLATE DIAMETER: 0.700 INCHES NOMINAL IN
•
TURNBUTTON CLINCH PLATE STYLE: CLINCH PLATE
•
HOLE INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
PLATE DIAMETER0.700 INCHES NOMINAL IN
TURNBUTTON CLINCH PLATE STYLECLINCH PLATE
HOLE INSIDE DIAMETER0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MS27977-65BInterchangeable
interchangeable cross-reference
interchangeable
BL33Interchangeable
interchangeable cross-reference
interchangeable
114858Interchangeable
interchangeable cross-reference
interchangeable
BS16501Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BL33?
BL33 is a CLINCH PLATE,TURNBUTTON FASTENER.
What parts can replace BL33?
There are 4 known substitutes for BL33: MS27977-65B, BL33, 114858 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BL33?
BL33 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-297-5106. 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