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BNF541-4RT — RETAINER,NUT AND BOLT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BNF541-4RT: RETAINER,NUT AND BOLT.

The RETAINER,NUT AND BOLT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1050, overall_width: 0.554 INCHES MAXIMUM IN, overall_length: 1.292 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE, material_thickness: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN, mounting_hole_diameter: 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-245-7136, 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
BNF541-4RT
NSN: 5340-01-245-7136
FSC: 5340 — Hardware, Commercial
CAGE: 27238 — BRISTOL INDUSTRIES, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1050
overall_width0.554 INCHES MAXIMUM IN
overall_length1.292 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
material_thickness0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
mounting_hole_diameter0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
material_document_and_classificationAMS 5085 ASSN STD SINGLE MATERIAL RESPONSE
distance_between_mounting_hole_centers0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
center_to_center_distance_between_cup_and_mounting_hole0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
NSN5340-01-245-7136
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BNF541-4RT 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5085 ASSN STD SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN CUP AND MOUNTING HOLE: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE
DISTANCE BETWEEN MOUNTING HOLE CENTERS0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5085 ASSN STD SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
OVERALL LENGTH1.292 INCHES MAXIMUM IN
OVERALL WIDTH0.554 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN CUP AND MOUNTING HOLE0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIALSTEEL COMP 1050
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 5
F39668N4FBReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10113016Reference document
Same NSN cross-reference
Reference document — Informative reference only
F9421-04Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
ST3M541-4DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F14421-04Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 BNF541-4RT?
BNF541-4RT is a RETAINER,NUT AND BOLT.
What parts can replace BNF541-4RT?
There are 5 known substitutes for BNF541-4RT: F39668N4FB, 10113016, F9421-04 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BNF541-4RT?
BNF541-4RT is cataloged in the U.S. Government catalog under NSN 5340-01-245-7136. 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.