Model: ST3M653C7-20A

Shoulder Screw

Special Features:

Furnished with one rubber o ring

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.630 inches and 0.697 inches

Fastener Length

Between 1.890 inches and 1.937 inches

Head Style

Flat countersunk undercut

Head Diameter

Between 0.881 inches and 0.888 inches

Head Height

Between 0.124 inches and 0.127 inches

Shoulder Diameter

0.4521 inches first shoulder and 0.4526 inches first shoulder

Shoulder Length

1.113 inches first shoulder and 1.136 inches first shoulder

Internal Drive Style

High-torque

End Application

F414 engine (f/a-18 f&g aircraft)aircraft hornet f/a-18

Thread Diameter

0.438 inches

Thready Qty Per Inch (tpi)

Countersink Angle

Between 99.0 degrees and 101.0 degrees

Shoulder Shape

Round first shoulder

Material

Steel comp xm-13

Material Specification

Ams5629 assn standard single material response

Thread Series Designator

Unjf

NSN

5305-01-146-0524

Part Number

ST3M653C7-20A

Description

Screw,shoulder

CAGE

58998

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

Part ST3M653C7-20A NSN 5305-01-146-0524

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22846

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:

0.1000lbs

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:

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