Model: 2518790

Thumbscrew

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.270 inches

Fastener Length

0.440 inches

Head Style

Knurled no. 4

Head Diameter

0.750 inches

Head Height

0.810 inches

Shoulder Diameter

0.418 inches first shoulder

Shoulder Length

0.100 inches first shoulder

Point Length

0.070 inches

Point Diameter

0.230 inches

Point Style

Chamfer dog

Thread Diameter

0.500 inches

Thready Qty Per Inch (tpi)

Point Chamfer Angle

45.0 degrees

Shoulder Shape

Round first shoulder

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 303

Material Specification

Qq-s-763, cond a federal specification single material response

Thread Series Designator

Unf

NSN

5305-00-138-6206

Part Number

2518790

Description

Thumbscrew

CAGE

30003

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 2518790 NSN 5305-00-138-6206

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment