Model: 3M927-4L8

Close Tolerance Screw

Special Features:

Lubricant- cetyl alcohol

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.469 inches
Fastener Length
0.969 inches
Head Style
Fillister countersunk
Head Diameter
Between 0.389 inches and 0.394 inches
Head Height
Between 0.070 inches and 0.074 inches
Grip Diameter
Between 0.248 inches and 0.249 inches
Internal Drive Style
High-torque
Thread Diameter
0.250 inches
Grip Length
0.500 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
125000 pounds per square inch
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Part Name Assigned By Controlling Agency
Screw-close tolerance 100 degrees countersunk reduced head, hi-torque, non magnetic cres, ivd aluminum coated
Material
Nickel alloy 718
Material Specification
Ams 5662 national std/spec single material response
Surface Treatment
Aluminum
Surface Treatment Specification
Mil-dtl-83488 type 2 cls 3 national std/spec single treatment response
Thread Series Designator
Unjf
NSN
5305-01-539-5816
Part Number
3M927-4L8
Description
Screw,close Tolerance
CAGE
76301

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.

Part 3M927-4L8 NSN 5305-01-539-5816

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
Concept No.:
App. Key:
SS
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:
A
ESD:
A
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:
096640
UFC:
50600
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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