Model: 55978-3-7P

Shoulder Screw

Properties:

Thread Class

Thread Length

Between 0.380 inches and 0.447 inches

Fastener Length

Between 0.828 inches and 0.875 inches

Head Style

Flat countersunk

Head Diameter

Between 0.376 inches and 0.381 inches

Shoulder Length

0.353 inches first shoulder and 0.375 inches first shoulder

Internal Drive Style

High-torque

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Countersink Angle

100.0 degrees

Shoulder Shape

Round first shoulder

Thread Series Designator

Unf

NSN

5305-00-165-1899

Part Number

55978-3-7P

Description

Screw,shoulder

CAGE

56878

Part 55978-3-7P NSN 5305-00-165-1899

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:

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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