Model: FF-B-561

Lag Screw

Special Features:

7 threads per inch

Properties:

Fastener Length
4.500 inches
Head Style
Hexagon
Head Height
Between 0.226 inches and 0.268 inches
Width Between Flats
Between 0.544 inches and 0.562 inches
Shoulder Diameter
0.360 inches and 0.388 inches first shoulder
Shoulder Length
0.125 inches first shoulder
Min. Tensile Strength (psi)
55000 pounds per square inch
Hardness Rating
60.0 rockwell b
Nonmachine Thread Style
Gimlet point (type a, ab or ba)
Nonmachine Thread Diameter
0.375 inches
Shoulder Shape
Round first shoulder
Material
Steel
Surface Treatment
Zinc
Surface Treatment Specification
Astm-b633 assn standard single treatment response
NSN
5305-00-406-9226
Part Number
FF-B-561
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 NSN 5305-00-406-9226

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
36433
FIIG:
A003B0
Concept No.:
App. Key:
BQ
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
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

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