Model: NAS1802-4-25

Machine Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 1.498 inches and 1.530 inches
Fastener Length
Between 1.546 inches and 1.592 inches
Head Style
Hexagon
Head Height
Between 0.125 inches and 0.140 inches
Width Between Flats
Between 0.367 inches and 0.376 inches
Internal Drive Style
Cross recess type ii
End Application
Aircraft osprey v-22a
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
160000 pounds per square inch
Part Name Assigned By Controlling Agency
Screw, hex head, cruciform recess
Screw Material
Stainless steel
Screw Material Specification
A286 cres (uns s66286) conforming to the chemistry of ams5731, ams5732, ams5737 or ams5853 mfr ref single material response
Screw Surface Treatment
Passivate
Screw Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unjf
Specification Data
80205 - nas1802 professional/industrial association standard
NSN
5305-01-548-8644
Part Number
NAS1802-4-25
Description
Screw,machine
CAGE
80205

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 NAS1802-4-25 NSN 5305-01-548-8644

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:
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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