Model: 2251-207

Machine Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.500 inches
Fastener Length
0.500 inches
Head Style
Pan
Head Diameter
Between 0.256 inches and 0.270 inches
Head Height
Between 0.087 inches and 0.097 inches
Internal Drive Style
Cross recess type 1
End Application
Helicopter, chinook, ch-47; m109 howitzer; bradley; apache helicopter; airborne mobile dir air spt ct; b-1 support equipment; satellite communications term; shipboard material handling eq; test set
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Screw Material
Steel comp 1010 or steel comp 1011 or steel comp 1013
Screw Surface Treatment
Cadmium and chromate and enamel
Thread Series Designator
Unc
Nondefinitive Specification/std Data
3 type and 9c style
NSN
5305-00-889-3000
Part Number
2251-207
Description
Screw,machine
CAGE
74006

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part 2251-207 NSN 5305-00-889-3000

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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:
SO
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
713
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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