NAAMS Spacers
NAAMS spacers are a great and cost-effective way to fill gaps or make adjustments to your automation processes. Use spacers to quickly extend clearance spaces to reach your desired setup locations. Spacer thickness ranges from 3mm to 7mm with different hole configurations. We offer all current and discontinued NAAMS codes which are manufactured out of S.A.E. 1020 hot rolled steel with a black oxide finish or call in for a stainless steel option. Our capabilities are able to match any desired specifications. For custom orders, call 586-463-3200 or email Sales@freertool.com.
*Volume discounts* - Contact us
Order 500 or more NAAMS Standards spacers or over 100 specialty NAAMS spacers and receive unlisted discounted pricing. Stock up today!
We have specialty NAAMS spacers in various thickness from .20 mm to 2.00 mm in 3-hole, 4-hole, 5-hole, and 6-hole configurations. If you do not see the one you are looking for, contact us and we will get them for you.
| NAAMS Part Number | Hole-Pattern | Width | Thickness (mm) | NAAMS Part Number | Hole-Pattern | Width | Thickness (mm) | NAAMS Part Number | Hole-Pattern | Width | Thickness (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ASP302 | 3 | 25 | 0.2 | ASP431 | 4 | 25 | 3.1 | ASP437N | 4 | 20 | 3.7 |
| ASP302N | 3 | 20 | 0.2 | ASP433 | 4 | 25 | 3.3 | ASP437S | 4 | 20 | 3.7 |
| ASP303 | 3 | 25 | 0.3 | ASP435 | 4 | 25 | 3.5 | ASP439N | 4 | 20 | 3.9 |
| ASP303N | 3 | 20 | 0.3 | ASP437 | 4 | 25 | 3.7 | ASP439S | 4 | 20 | 3.9 |
| ASP304 | 3 | 25 | 0.4 | ASP439 | 4 | 25 | 3.9 | ASP441N | 4 | 20 | 4.1 |
| ASP304N | 3 | 20 | 0.4 | ASP441 | 4 | 25 | 4.1 | ASP441S | 4 | 20 | 4.1 |
| ASP305 | 3 | 25 | 0.5 | ASP443 | 4 | 25 | 4.3 | ASP443N | 4 | 20 | 4.3 |
| ASP305N | 3 | 20 | 0.5 | ASP445 | 4 | 25 | 4.5 | ASP443S | 4 | 20 | 4.3 |
| ASP306 | 3 | 25 | 0.6 | ASP447 | 4 | 25 | 4.7 | ASP445N | 4 | 20 | 4.5 |
| ASP306N | 3 | 20 | 0.6 | ASP449 | 4 | 25 | 4.9 | ASP445S | 4 | 20 | 4.5 |
| ASP308 | 3 | 25 | 0.8 | ASP451 | 4 | 25 | 5.1 | ASP447N | 4 | 20 | 4.7 |
| ASP308N | 3 | 20 | 0.8 | ASP453 | 4 | 25 | 5.3 | ASP447S | 4 | 20 | 4.7 |
| ASP310 | 3 | 25 | 1 | ASP455 | 4 | 25 | 5.5 | ASP449N | 4 | 20 | 4.9 |
| ASP310N | 3 | 20 | 1 | ASP457 | 4 | 25 | 5.7 | ASP449S | 4 | 20 | 4.9 |
| ASP318 | 3 | 25 | 1.8 | ASP459 | 4 | 25 | 5.9 | ASP451N | 4 | 20 | 5.1 |
| ASP320 | 3 | 25 | 2 | ASP461 | 4 | 25 | 6.1 | ASP451S | 4 | 20 | 5.1 |
| ASP320N | 3 | 20 | 2 | ASP463 | 4 | 25 | 6.3 | ASP453N | 4 | 20 | 5.3 |
| ASP322 | 3 | 25 | 2.2 | ASP465 | 4 | 25 | 6.5 | ASP453S | 4 | 20 | 5.3 |
| ASP325 | 3 | 25 | 2.5 | ASP467 | 4 | 25 | 6.7 | ASP455N | 4 | 20 | 5.5 |
| ASP326 | 3 | 25 | 2.6 | ASP469 | 4 | 25 | 6.9 | ASP455S | 4 | 20 | 5.5 |
| ASP328 | 3 | 25 | 2.8 | ASP471 | 4 | 25 | 7.1 | ASP457N | 4 | 20 | 5.7 |
| ASP331 | 3 | 25 | 3.1 | ASP402N | 4 | 20 | 0.2 | ASP457S | 4 | 20 | 5.7 |
| ASP333 | 3 | 25 | 3.3 | ASP402S | 4 | 20 | 0.2 | ASP459N | 4 | 20 | 5.9 |
| ASP335 | 3 | 25 | 3.5 | ASP403N | 4 | 20 | 0.3 | ASP459S | 4 | 20 | 5.9 |
| ASP337 | 3 | 25 | 3.7 | ASP405N | 4 | 20 | 0.5 | ASP461N | 4 | 20 | 6.1 |
| ASP339 | 3 | 25 | 3.9 | ASP405S | 4 | 20 | 0.5 | ASP461S | 4 | 20 | 6.1 |
| ASP341 | 3 | 25 | 4.1 | ASP406N | 4 | 20 | 0.6 | ASP463N | 4 | 20 | 6.3 |
| ASP343 | 3 | 25 | 4.3 | ASP408N | 4 | 20 | 0.8 | ASP463S | 4 | 20 | 6.3 |
| ASP345 | 3 | 25 | 4.5 | ASP410N | 4 | 20 | 1 | ASP465N | 4 | 20 | 6.5 |
| ASP347 | 3 | 25 | 4.7 | ASP410S | 4 | 20 | 1 | ASP465S | 4 | 20 | 6.5 |
| ASP349 | 3 | 25 | 4.9 | ASP420 | 4 | 25 | 2 | ASP467N | 4 | 20 | 6.7 |
| ASP351 | 3 | 25 | 5.1 | ASP420N | 4 | 20 | 2 | ASP467S | 4 | 20 | 6.7 |
| ASP353 | 3 | 25 | 5.3 | ASP420S | 4 | 20 | 2 | ASP469N | 4 | 20 | 6.9 |
| ASP355 | 3 | 25 | 5.5 | ASP422 | 4 | 25 | 2.2 | ASP469S | 4 | 20 | 6.9 |
| ASP357 | 3 | 25 | 5.7 | ASP424 | 4 | 25 | 2.4 | ASP602N | 6 | 20 | 0.2 |
| ASP359 | 3 | 25 | 5.9 | ASP426 | 4 | 25 | 2.6 | ASP605N | 6 | 20 | 0.5 |
| ASP361 | 3 | 25 | 6.1 | ASP431N | 4 | 20 | 3.1 | ASP610N | 6 | 20 | 1 |
| ASP363 | 3 | 25 | 6.3 | ASP431S | 4 | 20 | 3.1 | ASP620N | 6 | 20 | 2 |
| ASP365 | 3 | 25 | 6.5 | ASP433N | 4 | 20 | 3.3 | ||||
| ASP367 | 3 | 25 | 6.7 | ASP433S | 4 | 20 | 3.3 | ||||
| ASP369 | 3 | 25 | 6.9 | ASP435N | 4 | 20 | 3.5 | ||||
| ASP371 | 3 | 25 | 7.1 | ASP435S | 4 | 20 | 3.5 |
Types of NAAMS Spacers

2-Hole Spacers
NAAMS shims in the 200 series are 60mm by 50mm ±1.0 with two Ø 10.5mm holes +0.3 -0.0 tolerances set 30mm apart. The thickness is specified by the specific NAAMS code.
3-Hole Spacers
NAAMS spacers in the 300 series are 46mm by 25mm ±0.5 with three Ø 10.5mm holes +0.3 -0.0 tolerances set 15mm apart. These are offered with a slotted design and narrow design as well. The narrow digns have the same configurations as regular the regular ASP300 series but with a 20mm width. S-slotted series have a 20mm width ±1.0 with a 9.0mm by 20mm slot. The thickness is specified by the specific NAAMS code.
4-Hole Spacers
NAAMS spacers in the 400 series are 61mm by 25mm ±0.5 with four Ø 10.5mm holes +0.3 -0.0 tolerances set 15mm apart. These are offered in an S-slotted series as well with a 9mm by 30mm slot that comes with a 20mm ±1.0 width. The thickness is specified by the specific NAAMS code.
5-Hole Spacers
NAAMS spacers in the 500 series are 76mm by 25mm ±0.5 with five Ø 10.5mm holes +0.3 -0.0 tolerances set 15mm apart. The thickness is specified by the specific NAAMS code.
6-Hole Spacers
NAAMS spacers in the 600 series are 50 mm by 63mm ±1.0 with 6 Ø 10.5mm holes +0.3 -0.0 tolerances set 15mm with three holes 15mm apart and three holes parallel 45mm ±0.2 on the opposite side. These S series spacers are offered with a double slot design. Slots are 9mm by 20mm set 40mm apart and come with a 36mm width. The thickness is specified by the specific NAAMS code.

3-Slot Spacers
NAAMS 3-slot construction spacers are slotted spacers with dimensions of 110mm by 40mm. The three slots are 35mm apart Ø 10.50mm ±0.20. Thickness is specified by the specific corresponding NAAMS code.

Spacer for 60 x 60 and 70 x 70 Mounting
NAAMS spacers in the ACS600 series are construction spacers with an 8-hole design. Dimensions are 100mm by 100mm with hole configurations of four Ø 10.5mm ±0.20 and four Ø 19.0mm ±0.20. The thickness of spacers is specified by the corresponding NAAMS codes.

Spacer for Shock Bracket
NAAMS Spacers in the 700 series are meant for shock brackets. They come with a 5 hole design with dimensions of 76mm by 57mm. The hole configurations include a single 42mm drill through hole with 4 surrounding 9.0 mm thru holes. The thickness is specified by the corresponding NAAMS code.
All tolerances are set to ±0.5 for 0 places, ±0.3 for 1 places, and ±0.03 for 2 places.
| NAAMS Spacers Complete Catalog Breakdown | ||
|---|---|---|
| Catalog Page | NAAMS CODE | DESCRIPTION |
| J-1 | Shims and Spacers Components Index | |
| J-4 | ASP330-ASP370 | Metric Fitting Spacers 3-Hole |
| J-5 | ASP430-ASP470 | Metric Fitting Spacers 4-Hole |
| J-6 | ASP630-ASP670 | Metric Fitting Spacers 6-Hole |
| J-7 | ASP330S-ASP370S | Metric Fitting Spacers Short Hole (Small) |
| J-9 | ASP630S-ASP670S | Metric Fitting Spacers 2-Hole (Small) |
| J-10 | ACS330S-ACS370S | Construction Spacer 3-Hole |
| J-11 | ACS630-ACS670 | Spacer for 60 x 60 and 70 x 70 Mounting |
| J-14 | ASP530-ASP570 | Metric Fitting Spacers 5-Hole |
| J-19 | ASP430S-ASP470S | Metric Fitting Spacers For 3-Hole (20 mm)* |
| J-20 | ASP430N-ASP470N | Metric Fitting Spacers 4-Hole (20 mm) |
| J-21 | ASP630N-ASP670N | Metric Fitting Spacers 6-Hole (20 mm) |
| J-22 | ASP230-ASP270 | Metric Fitting Spacers 2-Hole |
| J-23 | ASP730-ASP770 | Spacer for Shock Bracket 4-Hole |
NAAMS Spacer ASP435N
SKU: FN-ASP435N
MPN: ASP435N
NAAMS Spacer ASP435S
SKU: FN-ASP435S
MPN: ASP435S
NAAMS Spacer ASP436 DSCP051-M360
SKU: FN-ASP436
MPN: ASP436, FSD 41295-54, SP2-36, 41-502-2224, 56ZF28048-104, DSCP051-M360
NAAMS Spacer ASP436N DSCP037-M360
SKU: FN-ASP436N
MPN: ASP436N, DSCP037-M360
NAAMS Spacer ASP436N-SS
SKU: FN-ASP436N-SS
MPN: ASP436N-SS
NAAMS Spacer ASP436S DSCP016-M360
SKU: FN-ASP436S
MPN: ASP436S, DSCP016-M360
NAAMS Spacer ASP436S-SS
SKU: FN-ASP436S-SS
MPN: ASP436S-SS
NAAMS Spacer ASP437
SKU: FN-ASP437
MPN: ASP437
NAAMS Spacer ASP437N
SKU: FN-ASP437N
MPN: ASP437N
NAAMS Spacer ASP437S
SKU: FN-ASP437S
MPN: ASP437S
NAAMS Spacer ASP438 DSCP051-M380
SKU: FN-ASP438
MPN: ASP438, FSD 41295-55, SP2-38, 41-502-2225, 56ZF28048-105, DSCP051-M380
NAAMS Spacer ASP438N DSCP037-M380
SKU: FN-ASP438N
MPN: ASP438N, DSCP037-M380
NAAMS Spacer ASP438N-SS
SKU: FN-ASP438N-SS
MPN: ASP438N-SS
NAAMS Spacer ASP438S DSCP016-M380
SKU: FN-ASP438S
MPN: ASP438S, DSCP016-M380
NAAMS Spacer ASP438S-SS
SKU: FN-ASP438S-SS
MPN: ASP438S-SS
NAAMS Spacer ASP439
SKU: FN-ASP439
MPN: ASP439
NAAMS Spacer ASP439N
SKU: FN-ASP439N
MPN: ASP439N
NAAMS Spacer ASP439S
SKU: FN-ASP439S
MPN: ASP439S
NAAMS Spacer ASP440 DSCP051-M400
SKU: FN-ASP440
MPN: ASP440, FSD 41295-56, SP2-40, 41-502-2226, 56ZF28048-106, DSCP051-M400
NAAMS Spacer ASP440N DSCP037-M400
SKU: FN-ASP440N
MPN: ASP440N, DSCP037-M400
NAAMS Spacer ASP440N-SS
SKU: FN-ASP440N-SS
MPN: ASP440N-SS
NAAMS Spacer ASP440S
SKU: FN-ASP440S
MPN: ASP440S
NAAMS Spacer ASP440S-SS
SKU: FN-ASP440S-SS
MPN: ASP440S-SS
NAAMS Spacer ASP441
SKU: FN-ASP441
MPN: ASP441