Part Number NAS1581C4R21 Close Tolerance Screw
SKU: 5305013593632NAS1581C4R21 Close Tolerance Screw Datasheet
National aerospace standards part number NAS1581C4R21
Thread Direction:
Right-hand
Thread Length:
0.403 inches
Fastener Length:
Between 1.700 inches and 1.730 inches
Head Style:
Flat countersunk
Head Diameter:
Between 0.350 inches and 0.399 inches
Grip Diameter:
Between 0.2485 inches and 0.2495 inches
Internal Drive Style:
Torque-set ribbed
Thread Diameter:
0.250 inches
Grip Length:
Between 1.302 inches and 1.322 inches
Thready Qty Per Inch (tpi):
28
Countersink Angle:
Between 99.0 degrees and 101.0 degrees
Material Specification:
AMS5732 assn standard single material response or AMS5737 assn standard single material response or AMS5731 assn standard single material response
Surface Treatment Specification:
QQ-P-35 federal specification single treatment response
Specification Data:
80205-NAS1581 professional/industrial association standard
Manufacturer Cage:
80205
Trade Information:
- Schedule B: 7318152000
- SITC: 69421
- End Use: Iron and steel products, other
- NAICS: 332722
- USDA: 1
Bolts and bolts and their nuts or washers exported in the same shipment
Aerospace Hardware Guarantee
Genuine Manufacturers Parts
100% Product Inspection
7 year Sales Record Retention
Fast On-Time Delivery
HAZMAT Certified
Global Shipping