Model: 74D291037

Thumbscrew

Special Features:

Hole drilled in center of head 0.048 inch min 0.083 inch max dia; 0.184 inch max deep; countersunk 60 degrees to 0.187 inch diameter max optional

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

7.420 inches

Head Style

Knurled no. 1

Head Diameter

0.500 inches

Head Height

0.380 inches

Point Style

Flat

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Part Name Assigned By Controlling Agency

Navy special project

Material

Copper alloy

Material Specification

Ams4640 assn standard single material response

Thread Series Designator

Unjf

NSN

5305-01-241-2641

Part Number

74D291037

Description

Thumbscrew

CAGE

76301

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

Part 74D291037 NSN 5305-01-241-2641

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06673

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

096630

UFC:

50590

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7415338550
SITC: 69433
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Other copper screws (not for wood) bolts and nuts