Model: ST3M851V4-4AS

Shoulder Screw

Special Features:

Cetyl alcohol lube; furnished with one o-ring

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.443 inches and 0.510 inches
Fastener Length
Between 0.703 inches and 0.750 inches
Head Style
Flat countersunk undercut
Head Diameter
Between 0.456 inches and 0.508 inches
Head Height
Between 0.058 inches and 0.060 inches
Shoulder Diameter
0.2802 inches and 0.2807 inches first shoulder
Shoulder Length
0.1798 inches and 0.2018 inches first shoulder
Internal Drive Style
High-torque
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Shoulder Shape
Round first shoulder
Material
Titanium alloy uns r56400
Material Specification
Ams 4928 assn standard single material response or ams 4967 assn standard single material response
Thread Series Designator
Unjf
NSN
5305-01-218-1439
Part Number
ST3M851V4-4AS
Description
Screw,shoulder
CAGE
76301

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

Part ST3M851V4-4AS NSN 5305-01-218-1439

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
Concept No.:
App. Key:
SL
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

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:
136500
UFC:
68455
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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

Freight Class: Zirconium and articles thereof nesoi

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