NSN 5305-00-042-0994 420994, 00-042-0994, 000420994

5305-00-042-0994 A SCREW, (as modified) to which has been assembled one or more nonremovable washer(s).

Part Alternates: 420994, 5305-00-042-0994, 00-042-0994, 5305000420994, 000420994

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	01 JAN 1963	00-042-0994	06660 ( SCREW, ASSEMBLED WASHER )

Part Number	Cage Code	Manufacturer
420994	21450	ARMY WEAPONS COMMAND ATTN AMSWE-REE-S

Thank you very much for the excellent service and professional customer care.

Ernie G. Honeywell

The service was excellent. I can think of no improvements to date that you can make regarding internet sales.

John L. Raytheon

The representative for WBParts was efficient & handled our request in a timely & professional manner.

Karen G. General Dynamics

Tried two other sources, neither of them responded, was all done online, never spoke to anyone.

Rex S. US Airforce

The response is quick and the price is often very good. We are completely satisfied.

Patricia S. NASA

NSNs for Compare ( up to 4 ): Add 5305-00-042-0994

Compare

5305-00-042-1071, 5305-00-042-1073, 5305-00-042-1074, 5305-00-042-1187, 5305-00-042-1190

Characteristic	Specifications
THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.716 INCHES MINIMUM AND 0.852 INCHES MAXIMUM
FASTENER LENGTH	0.875 INCHES NOMINAL
MATERIAL	STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1566 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT	CADMIUM OR ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
HEAD STYLE	C37 ROUND
HEAD DIAMETER	0.443 INCHES MINIMUM AND 0.472 INCHES MAXIMUM
HEAD HEIGHT	0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
INTERNAL DRIVE STYLE	D1 CROSS RECESS TYPE 1
WASHER QUANTITY	1
PRIMARY WASHER STYLE	G1 FLAT EXTERNAL TEETH
PRIMARY WASHER OUTSIDE DIAMETER	0.460 INCHES MINIMUM AND 0.475 INCHES MAXIMUM
PRIMARY WASHER MATERIAL THICKNESS	0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM
MANUFACTURERS CODE	21450
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	420994

Category	Code	Description
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:	U	Precious metal type is unknown
Criticality Code:	X	The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Category	Code	Description
NMF Description	093486	BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating	U	50
Less than truck load rating	W	Rating Variable
Water commodity Code	713	unknown
Originating Activity Code	XX
Air Dimension Code	A	Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity	B	Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling	Z	No special handling required.
Special Handling Code	9	unknonwn
HAZMAT
Type of Cargo	Z	No special type of cargo code applicable