91A4MA/FD — 91A4MA/FD

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

91A4MA/FD: 91A4MA/FD.

The 91A4MA/FD is a the manufacturer industrial component. Key specifications include overall_depth: 0.520 INCHES MINIMUM IN, inside_diameter: 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN, outside_diameter: 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN, screw_drive_type: HEXAGON SOCKET, special_features: FLUORESCENT REF MARKING, style_designator: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5355-01-180-6678, 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

91A4MA/FD

NSN: 5355-01-180-6678
FSC: 5355 — Knobs and Pointers
CAGE: 99813 — JAN HARDWARE MFG CO INC (USA)

SPECIFICATIONS

overall_depth	0.520 INCHES MINIMUM IN
inside_diameter	0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN
outside_diameter	0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
screw_drive_type	HEXAGON SOCKET
special_features	FLUORESCENT REF MARKING
style_designator	ROUND
attachment_method	SETSCREWS
counterbore_depth	0.114 INCHES MINIMUM IN
overall_thickness	0.760 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
reference_marking	DOT
nominal_thread_size	0.164 INCHES SCREW HOLE IN
counterbore_diameter	0.640 INCHES MINIMUM IN
NSN	5355-01-180-6678

COMPONENT DIAGRAM

KEY FEATURES

•

DISTANCE FROM HOLE CENTER TO KNOB/SKIRT BASE: 0.260 INCHES MAXIMUM IN

•

SHAFT ACCOMMODATION STYLE: COUNTERBORED

•

OVERALL THICKNESS: 0.760 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN

•

MATERIAL TRANSPARENCY: OPAQUE

•

STYLE DESIGNATOR: ROUND

•

OUTSIDE DIAMETER: 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN

•

COUNTERBORE DEPTH: 0.114 INCHES MINIMUM IN

•

REFERENCE MARKING: DOT

TECHNICAL CHARACTERISTICS

DISTANCE FROM HOLE CENTER TO KNOB/SKIRT BASE	0.260 INCHES MAXIMUM IN
SHAFT ACCOMMODATION STYLE	COUNTERBORED
OVERALL THICKNESS	0.760 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
MATERIAL TRANSPARENCY	OPAQUE
STYLE DESIGNATOR	ROUND
OUTSIDE DIAMETER	0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
COUNTERBORE DEPTH	0.114 INCHES MINIMUM IN
REFERENCE MARKING	DOT
SETSCREW HOLE QUANTITY	2
NOMINAL THREAD SIZE	0.164 INCHES SCREW HOLE IN

SUBSTITUTES & CROSS-REFERENCES 7

10086948Reference document

Same NSN cross-reference

Reference document — Informative reference only

509-1FD-2MReference document

Same NSN cross-reference

Reference document — Secondary reference

NASM3926Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

MIL-K-3926Reference document

Same NSN cross-reference

Reference document — Secondary reference

90-1FD-2GReference document

Same NSN cross-reference

Reference document — Secondary reference

2I2BReference 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 91A4MA/FD?

91A4MA/FD is a 91A4MA/FD.

What parts can replace 91A4MA/FD?

There are 7 known substitutes for 91A4MA/FD: 10086948, 509-1FD-2M, NASM3926 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 91A4MA/FD?

91A4MA/FD is cataloged in the U.S. Government catalog under NSN 5355-01-180-6678. This indicates validated use in U.S. government and defense supply chains.

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