8991678-24

899167824 Machine Screw

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Datasheet. 8991678-24 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

2a

Thread Direction
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

RIGHT-Hand

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.562in. ⁓9/16"

Fastener Length
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.

0.562in. ⁓9/16"

Head Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.

watertight

Head Diameter
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.

0.347in.

Head Height
A measurement from the bottom to the top of the head,in distinction from depth.

0.115in. ⁓1/8"

Internal Drive Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.

cross recess type 1

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.164in. (UTS #8)

Features Provided
Those features,not otherwise specified,which may be required for proper functioning of the item.

o ring

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

32

Screw Material
The chemical compound or mechanical mixture properties of which the screw is fabricated.

steel comp 301 or steel comp 302 or steel comp 302b or steel comp 303 or steel comp 303 plus x or steel comp 303se or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309s or steel comp 310 or steel comp 310s or steel comp 314 or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 or steel comp 323 or steel comp 324 or steel comp 347 or steel comp 348 or steel comp 384 or steel comp 385

Screw Surface Treatment
The metallic,nonmetallic,and/or chemical properties with which the screw is plated,dipped and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

passivate

Screw Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material of the screw.

1980032, fscm 49671 mfr ref single treatment response

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unc

Answers.

What class is the thread series?

Unc

What type of screw surface treatment?

Passivate

What is the thread quantity per inch?

32

What is the head style?

Watertight

What is the thread length?

0.562 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 8991678-24?

5305-01-071-8752

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 8991678-24?

FSC 5305 ⁓ Screws

NSN 5305-01-071-8752 SCREW,MACHINE

unc thread series passivate screw surface treated 32 thread quantity per inch watertight head style 0.562" thread length right-hand 2a thread class

NIIN
010718752
NIIN Date
02/16/79
Schedule B
7318152000 
Name Code
06657
FIIG
A500D0
QUP
 
Historical Price
$2.35 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

Major End Users Countries and entities

  • - Defense Logistics Agency 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

8991678-24 / Screw,machineWhat is the formal definition of this item?

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.