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BN516-820-6 — NUT,BLIND ASSEMBLY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BN516-820-6: NUT,BLIND ASSEMBLY.

The NUT,BLIND ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OR STEEL COMP 305 BASE, nut_height: 0.614 INCHES NOMINAL0.614 INCHES NOMINAL IN, nut_diameter: 0.643 INCHES NOMINAL0.643 INCHES NOMINAL IN, thread_class: 3B3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF), mounting_style: FLUSH FLANGEFLUSH FLANGE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-491-9884, 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
BN516-820-6
NSN: 5310-01-491-9884
FSC: 5310 — Nuts and Washers
CAGE: 73198 — HICKOK W O MFG CO THE (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OR STEEL COMP 305 BASE
nut_height0.614 INCHES NOMINAL0.614 INCHES NOMINAL IN
nut_diameter0.643 INCHES NOMINAL0.643 INCHES NOMINAL IN
thread_class3B3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
mounting_styleFLUSH FLANGEFLUSH FLANGE
sleeve_diameter0.651 INCHES MINIMUM AND 0.651 INCHES MINIMUM AND 0.654 INCHES MAXIMUM0.654 INCHES MAXIMUM IN
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentCADMIUM NUT
nominal_thread_size0.500 INCHES0.500 INCHES IN
thread_quantity_per_inch2020
material_document_and_classificationQQ-S-763,TYPE 431 FED SPEC SINGLE MATERIAL RESPONSE NUT
NSN5310-01-491-9884
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BN516-820-6 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE I,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
•
MOUNTING STYLE: FLUSH FLANGEFLUSH FLANGE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,TYPE 304 OR 305 FED SPEC SINGLE MATERIAL RESPONSE BASE
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES0.500 INCHES IN
•
NUT DIAMETER: 0.643 INCHES NOMINAL0.643 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE I,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
MOUNTING STYLEFLUSH FLANGEFLUSH FLANGE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,TYPE 304 OR 305 FED SPEC SINGLE MATERIAL RESPONSE BASE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,TYPE 431 FED SPEC SINGLE MATERIAL RESPONSE NUT
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES0.500 INCHES IN
NUT DIAMETER0.643 INCHES NOMINAL0.643 INCHES NOMINAL IN
SLEEVE DIAMETER0.651 INCHES MINIMUM AND 0.651 INCHES MINIMUM AND 0.654 INCHES MAXIMUM0.654 INCHES MAXIMUM IN
NUT HEIGHT0.614 INCHES NOMINAL0.614 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
BN516Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 BN516-820-6?
BN516-820-6 is a NUT,BLIND ASSEMBLY.
What parts can replace BN516-820-6?
There is 1 known substitute for BN516-820-6: BN516. Substitute compatibility should be verified for your specific system.
What is the NSN for BN516-820-6?
BN516-820-6 is cataloged in the U.S. Government catalog under NSN 5310-01-491-9884. 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.