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Datasheet. 990106-255 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a
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
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.188in. and 0.250in. ⁓1/4"
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.
0.219in. and 0.250in. ⁓1/4"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
pan
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.256in. and 0.270in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.087in. and 0.097in. ⁓7/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type 1
The national stock number or the identification information of the end equipment for which the item is a part.
w/s:mk 28, 5-inch 38 caliber twin gun mount; helicopter, MH-53E; deep submergence systems programs (dssp) ; landing craft, utility, 115 ft; helicopter, search and rescue, HH-60H; helicopter, uscg search and rescue, HH-60J; fire pumps; aircraft (AC-130H, MC-130H, EC-130E, HC-130) ; helicopter, carrier based asw, SH-60F
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.138in. (UTS #6)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
57000 pounds per square inch
The chemical compound or mechanical mixture properties of which the screw is fabricated.
copper alloy
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the screw material.
QQ-B-626 fed spec single material response or QQ-W-321 fed spec single material response
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.
1HD
Unc
32
Pan
0.188 inches minimum and 0.250 inches maximum
Right-hand
2a
Schedule B number: 7415338550
nmfc 096630
Other copper screws (not for wood) bolts and nuts
FSC 5305 ⁓ Screws
NSN 5305-00-059-8248 SCREW,MACHINE
Used on w/s:mk 28, 5-inch 38 caliber twin gun mount; helicopter, mh-53e; deep submergence systems programs (dssp); landing craft, utility, 115 ft; helicopter, search and rescue, hh-60h; helicopter, uscg search and rescue, hh-60j; fire pumps; aircraft (ac-130h, mc-130h, ec-130e, hc-130); helicopter, carrier based asw, sh-60f. unc thread series 32 thread quantity per inch pan head style 0.188" thread length right-hand 2a thread class
- NIIN
- 000598248
- NIIN Date
- 01/01/63
- Schedule B
- 7415338550
- Name Code
- 06657
- FIIG
- A500D0
- Item Weight
- 0.200lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $4.73 HD
- 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
| 1. | 343-0328-000 | Cage 77250 |
| 2. | 12984-153 | Cage 33866 |
| 3. | 247-4P | Cage 1LQK8 |
| 4. | B203502G452-AT | Cage 58474 |
| 5. | 1301874-83 | Cage D9182 |
| 6. | 11124-7-37 | Cage D9182 |
| 7. | MS35214-23 | Cage 80205 |
| 8. | JD861 | Cage 29215 |
| 9. | 801139 | Cage 19203 |
| 10. | MS35214-23 | Cage 96906 |
| 11. | 247-4P | Cage 28480 |
Major End Users Countries and entities
- - National Aeronautics And Space Administration
- - National Aeronautics And Space Administration
- - Department of The Navy
- - Department of The Army
- - Department of The Air Force
- - U.s. Marine Corps
- - U.s. Coast Guard
- - Austria
- - Poland
- - Bulgaria
- - Brazil
- - Spain
- - Singapore
- - Kuwait
- - Malaysia
- - Thailand
- - Australia
- - Belgium
- - Canada
- - New Zealand
- - France
- - Germany
- - Republic of Korea
- - United Kingdom
- - Philippines
- - Netherlands
- - Italy
- - Denmark
- - Greece
- - Turkey
- - Nato Maintenance And Supply Agency
Availability for 990106-255 A member of our team will provide you with a price and availability quote
Request a Quote »Shipping Information
- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 70.0
- 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)
- 096630 SCREWS NOI BRASS/BRONZE/COPPER
- UFC (universal freight code)
- 50590
Similar by Design Other screws with similar characteristics
Nothing similar to this part number was found in our inventory
990106-255 / 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.
