Robinsons R66 - Standard Torques

20-32 Standard Torques
FASTENER SERIES SIZE
EXAMPLE
FASTENER
DRY TORQUE
(IN.-LB)
NAS 1300 Bolts
NAS 6600 Bolts
NAS 600 THRU 606 Screws
NAS 623 Screws
NAS 1351 Screws
NAS 1352 Screws
10-32 NAS6603 50
1/4-28 NAS6604 120
5/16-24 NAS6605 240
3/8-24 NAS6606 350
7/16-20 NAS6607 665
1/2-20 NAS6608 995
AN3 Bolts
AN4 Bolts
AN6 Bolts
AN8 Bolts
AN502 Screws
AN503 Screws
AN509 Screws
AN525 Screws
MS24694 Screws
MS27039 Screws
10-32 AN3 37
1/4-28 AN4 90
3/8-24 AN6 280
1/2-20 AN8 795
STAMPED NUTS
(PALNUTS)
10-32 B330-7 (MS27151-7) 6 to 15
1/4-28 B330-13 (MS27151-13) 11 to 25
5/16-24 B330-16 (MS27151-16) 20 to 40
3/8-24 B330-19 (MS27151-19) 29 to 60
7/16-20 B330-21 (MS27151-21) 42 to 85
1/2-20 B330-24 (MS27151-24) 54 to 110
TAPERED PIPE
THREADS
1/8-27 N/A 60
1/4-18 N/A 85
3/8-18 N/A 110
1/2-14 N/A 160
3/4-14 N/A 230
ROD END JAM NUTS
(AN315 and AN316)
10-32 AN315-3 15
1/4-28 AN316-4 40
5/16-24 AN316-5 80
3/8-24 AN316-6 110
1. Values include nut self-locking torque.
2. Increase values 10% if torqued at bolt head.
3. For elbow & tee fittings which require alignment, torque to indicated value then tighten to desired position.
4. Values ± 10% unless range is specified.
5. Unless otherwise noted, thread sizes 8-32 & smaller are not used for primary structure & do not require specific
torque.
Page 20.6 Chapter 20 Standard Practices MAY 2015