NEMA frame determines mounting bolt pattern TEFC for outdoor, ODP for dry indoor only
C-face vs foot-mount — different mounting
PRODUCT OVERVIEW
The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL, head_style: FLAT CHAMFER, head_height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_length: 0.875 INCHES MINIMUM 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 6105-00-635-4887, 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
52-20-91
NSN:6105-00-635-4887 FSC:6105 CAGE:10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
material
STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
head_style
FLAT CHAMFER
head_height
0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class
3A A
head_diameter
0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_length
0.875 INCHES MINIMUM IN
fastener_length
3.565 INCHES MINIMUM AND 3.625 INCHES MAXIMUM IN
hardness_rating
80.0 ROCKWELL B MINIMUM OVERALL
thread_direction
RIGHT-HAND
surface_treatment
PASSIVATE OVERALL
width_across_flats
0.156 INCHES MINIMUM AND 0.159 INCHES MAXIMUM IN
internal_drive_style
HEXAGON
NSN
6105-00-635-4887
COMPONENT DIAGRAM
KEY FEATURES
•
SHAFT END CHARACTERISTIC: A5 SINGLE STYLE SINGLE END
•
DUTY CYCLE: CONTINUOUS
•
FREQUENCY IN HERTZ: 60.0 INPUT
•
SHAFT CENTER TO MOUNTING SURFACE DISTANCE: 3.000 INCHES SINGLE END IN
•
WINDING TYPE: INDUCTION-SPLIT PHASE
•
SHAFT ROTATION DIRECTION: CLOCKWISE SINGLE END
•
SHAFT DIAMETER: 0.500 INCHES NOMINAL SINGLE END IN
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FREQUENTLY ASKED QUESTIONS
What is 52-20-91?
52-20-91 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 52-20-91?
There are 11 known substitutes for 52-20-91: B2133, B1578, 501-B-2033 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 52-20-91?
52-20-91 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-00-635-4887. This indicates validated use in U.S. government and defense supply chains.
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