Model: FF-B-561 STD P/N-634

Lag Screw

Properties:

Fastener Length

1.000 inches

Head Style

Hexagon

Head Height

Between 0.150 inches and 0.188 inches

Width Between Flats

Between 0.425 inches and 0.438 inches

Shoulder Diameter

0.237 inches first shoulder and 0.260 inches first shoulder

Shoulder Length

0.094 inches first shoulder

Nonmachine Thread Style

Gimlet point (type a, ab or ba)

Nonmachine Thread Diameter

0.250 inches

Shoulder Shape

Round first shoulder

Material

Copper alloy 651

Material Specification

Qq-c 591 federal specification single material response

Nondefinitive Specification/std Data

1 type and 1 style and d grade

NSN

5305-00-145-1045

Part Number

FF-B-561 STD P/N-634

Description

Screw,lag

CAGE

81348

An externally threaded fastener having a square or hexagon head and with a continuous thread (wood screw type or fetter type) extending from a gimlet or cone point for a distance of slightly more than one-half the length of the screw.

Part FF-B-561 STD P/N-634 NSN 5305-00-145-1045

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

36433

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:

093460

UFC:

48930

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