C387V4-20

Close Tolerance Screw

NSN 5305-00-487-5261

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
UOM:
NIIN:
004875261

Detail Specifications

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
Between 0.352 inches and 0.402 inches
Fastener Length:
Between 1.612 inches and 1.642 inches
Head Style:
Flat countersunk
Head Diameter:
Between 0.412 inches and 0.439 inches
Grip Diameter:
Between 0.2485 inches and 0.2495 inches
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
Between 1.240 inches and 1.260 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Countersink Angle:
Between 59.75 degrees and 60.25 degrees
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Material:
Titanium alloy uns r54520
Material Specification:
Nas 621, 6al-4v assn standard single material response
Thread Series Designator:
Unf
NSN:
5305-00-487-5261
Item Name:
Screw,machine,flat-head,close Tolerance
Cage Code:
81755

Manufacturer Part Numbers

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
AIC1023V4-20
Cage Code:
06725
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
64040V4-20
Cage Code:
80539
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
HR101V4-20
Cage Code:
73197
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
VT1039V4-20
Cage Code:
92215
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
CS318642V4-20
Cage Code:
93907
RNCC:
3
RNVC:
2
RNAAC:
9Z
Status:
A
MSDS:
SADC:
Part Number:
HR101V4-20
Cage Code:
L4528
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
64040V4-20
Cage Code:
56878
RNCC:
5
RNVC:
9
RNAAC:
9Z
Status:
A
MSDS:
SADC:

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
Concept No.:
App. Key:
SS
Cond. Code:
1
Status:
A

Part Materials

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

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Pricing & Availability

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Privacy | Terms

Definition Definition of approved item name (AIN): "Close Tolerance Flat-head Machine Screw"

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Import / Export
  • Schedule B: 8109900000
  • SITC: 69987
  • End Use: Finished metal shapes
  • NAICS: 331491
  • USDA: 1

Classification: Zirconium and articles thereof nesoi


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