Model: VS2521F7-11

Close Tolerance Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.441 inches and 0.491 inches
Fastener Length
Between 1.139 inches and 1.169 inches
Head Style
Double hexagon
Head Height
Between 0.247 inches and 0.267 inches
Width Between Flats
Between 0.678 inches and 0.698 inches
Hole Diameter
0.070 inches
Grip Diameter
Between 0.4358 inches and 0.4367 inches
Shank Unthreaded Hole Diameter
0.105 inches first hole and 0.110 inches first hole
Thread Diameter
0.438 inches
Grip Length
Between 0.678 inches and 0.698 inches
Hole Quantity
2
Hole Type
Drilled
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
132000 pounds per square inch
Hole Configuration Style
Double hexagon flats
Distance From Head Largest Bearing Surface To Shank Hole Center
1.014 inches first hole and 1.044 inches first hole
Surface Finish
32.0 microinches bearing surface of head
Material
Steel comp h11
Material Specification
Ams6485 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Nas 672 assn standard single treatment response
Thread Series Designator
Unjf
NSN
5306-00-136-2875
Part Number
VS2521F7-11
Description
Bolt,close Tolerance
CAGE

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

Part VS2521F7-11 NSN 5306-00-136-2875

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
27851
FIIG:
A003B0
Concept No.:
App. Key:
BC
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

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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