Screws, Nuts and Washers

Sizes stocked are 4BA to 16BA and M1, M2, M2.5 and M3.

BA Screw Threads

Below is a table BA thread sizes which should assist modellers to choose the screw they require.

BA Outer Diameter Threads per Inch
0 0.2362" (6.00mm) 25.38
1 0.2087 (5.00mm) 28.25
2 0.1850" (4.70mm) 31.35
3 0.1614" (4.10mm) 34.84
4 0.1417" (3.60mm) 38.46
5 0.1260" (3.20mm) 43.10
6 0.1102" (2.80mm) 47.85
7 0.0984" (2.50mm) 52.91
8 0.0866" (2.20mm) 56.17
9 0.0748" (1.90mm) 59.17
10 0.0669" (1.70mm) 72.46
11 0.0591"(1.50mm) 81.97
12 0.0591" (1.30mm) 90.91
13 0.0472" (1.20mm) 102
14 0.0394" (1.00mm) 110
15 0.0354" (0.90mm) 121
16 0.0311" (0.79mm) 134
NOTE: All screws, nuts and washers are BRASS unless indicated otherwise.

4BA

Code Description Price A$
C4BARH12 4BA Roundhead 1/2" (10 pack) $4.30
C21224 4BA Hexagonal Nuts Standard (10 pack) $1.65

5BA

Code Description Price A$
C21225 5BA Hexagonal Nuts Standard (10 pack) $1.65

6BA

Code Description Price A$
C6BACH12 6BA Cheesehead 1/2" long (10 pack) $3.50
C6BACH14 6BA Cheesehead 1/4" long (10 pack) $6.45
C6BACH18 6BA Cheesehead 1/8" long (10 pack) $5.55
C6BARH14 6BA Roundhead 1/4" long (10 pack) $6.45
C6BARH18 6BA Roundhead 1/8" long (10 pack) $6.45
CST21226 6BA Hexagonal Standard (10 pack) Steel $1.50
CST21236 6BA Washers (20 pack) Steel $1.05
C6BACS12 6BA Countersunk 1/2" (10 pack) $3.55
C6BACS14 6BA Countersunk 1/4" (10 pack) $5.40
C6BACS18 6BA Countersunk 1/8" (10 pack) $5.05
C21226 6BA Hex Nuts Standard (10 pack) $1.65
C21236 6BA Washers (20 pack) $1.50
CST6BAHX12 6BA Hexagon Head. 1/2" (10 pack) Steel $3.95

8BA

Code Description Price A$
C8BACH1 8BA Cheesehead 1" long (10 pack) $7.20
C8BACH12 8BA Cheesehead 1/2" long (10 pack) $5.80
C8BACH14 8BA Cheesehead 1/4" long (10 pack) $4.55
C8BACH18 8BA Cheesehead 1/8" long (10 pack) $4.40
C8BACH34 8BA Cheesehead 3/4" long (10 pack) $7.20
C8BARH1 8BA Cheesehead 1" long (10 pack) $7.20
C8BARH12 8BA Cheesehead 1/2" long (10 pack) $5.65
C8BARH14 8BA Cheesehead 1/4" long (10 pack) $4.45
C8BARH18 8BA Cheesehead 1/8" long (10 pack) $4.40
C8BARH34 8BA Cheesehead 3/4" long (10 pack) $6.75
C21218 8BA Hex Lock (10 pack) $1.65
C21228 8BA Hex Nuts Standard (10 pack) $1.65
C21238 8BA Washers (20 pack) $3.35
CSTC8BACH12 8BA Cheesehead 1/2" long (10 pack) Steel $4.70
CST8BACH14 8BA Cheesehead 1/4" long (10 pack) Steel $2.90
CST8BARH14 8BA Roundhead 1/4" long (10 pack) Steel $2.50
CST8BACS12 8BA Countersunk 1/2" long (10 pack) Steel $4.70
CST8BACS14 8BA Countersunk 1/4" long (10 pack) Steel $2.50
CST8BAHX12 8BA Hexag 1/2" long (10 pack) Steel $3.95
CST8BAHX14 8BA Hexag 1/4" long (10 pack) Steel $3.95

10BA

Code Description Price A$
C10BACH1 10BA Cheesehead 1" long (10 pack) $6.75
C10BACH12 10BA Cheesehead 1/2" long (10 pack) $5.80
C10BACH14 10BA Cheesehead 1/4" long (10 pack) $4.55
C10BACH18 10BA Cheesehead 1/8" long (10 pack) $4.20
C10BACH34 10BA Cheesehead 3/4" long (10 pack) $6.45
C10BARH1 10BA Cheesehead 1" long (10 pack) $7.20
C10BARH12 10BA Cheesehead 1/2" long (10 pack) $6.00
C10BARH14 10BA Cheesehead 1/4" long (10 pack) $5.00
C10BARH18 10BA Cheesehead 1/8" long (10 pack) $4.40
C10BARH316 10BA Cheesehead 3/16" long (10 pack) $4.40
C10BARH34 10BA Cheesehead 3/4" long (10 pack) $5.50
C10BARH38 10BA Cheesehead 3/8" long (10 pack) $5.50
CST212210 10BA Hexagon Standard (10 pack) Steel $3.60
CST212310 10BA Washers (20 pack) Steel $4.65
C10BACS1 10BA Countersunk 1" long (10 pack) $7.20
C10BACS12 10BA Countersunk 1/2" long (10 pack) $7.20
C10BACS14 10BA Countersunk 1/4" long (10 pack) $5.80
C10BACS18 10BA Countersunk 1/8" long (10 pack) $4.55
C10BACS34 10BA Hexagonal Nuts Standard (10 pack) $4.40
C212210 10BA Countersunk 3/4" long (10 pack) $6.75
C212310 10BA Washers (20 pack) $3.25
CST10BACH12 10BA Cheesehead 1/2" long (10 pack) Steel $5.05
CST10BACH14 10BA Cheesehead 1/4" long (10 pack) Steel $2.50
CST10BARH12 10BA Roundhead 1/2" long (10 pack) Steel $5.05
CST10BARH14 10BA Roundhead 1/4" long (10 pack) Steel $2.50
CST10BARH18 10BA Roundhead 1/8" long (10 pack) Steel $2.50
CST10BACS12 10BA Countersunk 1/2" long (10 pack) Steel $2.50
CST10BACS14 10BA Countersunk 1/4" long (10 pack) Steel $2.50
CST10BAHX12 10BA Hexagonal Head 1/2" long (10 pack) Steel $3.95
CST10BAHX14 10BA Hexagonal Head 1/4" long (10 pack) Steel $3.95

12BA

Code Description Price A$
C12BACH12 12BA Cheesehead 1/2" long (10 pack) $6.15
C12BACH14 12BA Cheesehead 1/4" long (10 pack) $5.90
C12BACH18 12BA Cheesehead 1/8" long (10 pack) $3.00
C12BACH316 12BA Cheesehead 3/16" long (10 pack) $3.00
C12BACH38 12BA Cheesehead 3/8" long (10 pack) $4.30
C12BARH14 12BA Roundhead 1/4" long (10 pack) $5.90
C12BARH316 12BA Roundhead 3/16" long (10 pack) $3.00
C12BARH316 12BA Roundhead 3/8" long (10 pack) $7.35
C12BACS12 12BA Countersunk 1/2" long (10 pack) $6.15
C12BACS14 12BA Countersunk 1/4" long (10 pack) $4.30
C12BACS18 12BA Countersunk 1/8" long (10 pack) $3.00
C12BACS316 12BA Countersunk 3/16" long (10 pack) $3.00
C12BACS38 12BA Countersunk 3/8" long (10 pack) $4.30
C212212 12BA Hexagonal Nuts Standard (10 pack) $3.55
C212312 12BA Washers (20 pack) $4.90
CST12BACH12 12BA Cheesehead 1/2" long (10 pack) Steel $4.10
CST12BARH316 12BA Roundhead 3/16" long (10 pack) Steel $2.50
CST12BARH34 12BA Roundhead 3/4" long (10 pack) Steel $2.50
CST12BAHX14 12BA Hexagonal Head 1/4" long (10 pack) Steel $3.95
CST12BAHX14 12BA Hexagonal Head 1/4" long (10 pack) Steel $3.95

14BA

Code Description Price A$
C14BACH12 14BA Cheesehead 1/2" long (10 pack) $6.45
C14BACH14 14BA Cheesehead 1/4" long (10 pack) $5.05
C14BACH332 14BA Cheesehead 3/32" long (10 pack) $3.55
C14BACH38 14BA Cheesehead 3/8" long (10 pack) $4.30
C14BACS12 14BA Countersunk 1/2" long (10 pack) $6.45
C14BACS14 14BA Countersunk 1/4" long (10 pack) $5.05
C14BACS332 14BA Countersunk 3/32" long (10 pack) $3.55
C212214 14BA Hexagonal Nuts Standard (10 pack) $4.10
C212214 14BA Hexagonal Nuts Standard (10 pack) $4.10
C212314 14BA Washers (20 pack) $5.50
CST14BACH14 14BA Cheesehead 3/8" long (10 pack) Steel $4.65

16BA

Code Description Price A$
C16BACH12 16BA Cheesehead 1/2" long (10 pack) $7.45
C16BACH316 16BA Cheesehead 3/16" long (10 pack) $5.80
C16BACH38 16BA Cheesehead 3/8" long (10 pack) $7.45
C16BACS14 16BA Countersunk 1/4" long (10 pack) $6.75
C16BACS316 16BA Countersunk 3/16" long (10 pack) $5.80
C212216 16BA Heexagonal Nuts Standard (10 pack) $5.80

M1.6

Code Description Price A$
CSSM16CS5 Stainless Steel Metric M1.6 Countersunk 5mm long (10 pack) $6.85
CSSM16CS10 Stainless Steel Metric M1.6 Countersunk 10mm long (10 pack) $10.00
CSSM16PH5 Stainless Steel Metric M1.6 Panhead 5mm long (10 pack) $6.85
CSS2122M16 Stainless Steel Metric M1.6 (10 pack) $6.75
CSS2123M16 Stainless Steel Washers M1.6 (10 pack) $3.25

M2

Code Description Price A$
C2122M2 Brass Nuts Metric M2 (10 pack) $2.05
CM2CS5 Brass Metric M2 Countersunk 5mm long (10 pack) $3.00
CM2CS10 Brass Metric M2 Countersunk 10mm long (10 pack) $3.35
CM2CS20 Brass Metric M2 Countersunk 20mm long (10 pack) $3.35
CM2PH5 Brass Metric M2 Panhead 5mm long (10 pack) $5.05
CM2PH10 Brass Metric M2 Panhead 10mm long (10 pack) $3.10
CM2PH20 Brass Metric M2 Panhead 20mm long (10 pack) $3.25

M2.5

Code Description Price A$
C2122M25 Brass Nuts Metric M2.5 (10 pack) $2.25
CM25CS10 Brass Metric M2.5 Countersunk 10mm long(10 pack) $3.00
CM25CH10 Brass Metric M2.5 Cheesehead 10mm long(10 pack) $5.50

M3

Code Description Price A$
C2122M3 Brass Nuts Metric M3 (10 pack) $2.40
CM3CS10 Brass Metric M3 Countersunk 10mm long (10 pack) $3.00
CM3PH10 Brass Metric M3 Panhead 10mm long (10 pack) $3.55

Brunel Hobbies is a Division of Brunel Digital Services Pty Ltd ACN 090 975 967 © MMVII

Updated 3 February 2008. Contact Webmaster