Skip to search Skip to main content Skip to navigation

PST joins DwyerOmega. Read more>

We noticed you are from . Visit your local site for regional offers and live support.

0.385" Bore Diameter Threaded Straight Thermowells

Standard Threaded Thermowell for 3/8 Inch Diameter Elements

$57.91

Item# 3/4-385S-U21/2-304SS

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $57.91
10-24 $55.01
25-99 $52.12
100-499 $49.22
500-999 $46.33
1000+ $43.43

In stock

Lead Time (If not in stock): 6 weeks
Standard Threaded Thermowell for 3/8 Inch Diameter Elements 3/4-385S-U21/2-304SS 3/4-385S-U21/2-304SS
  • Available in Carbon Steel and Stainless Steel
  • Standard Insertion Lengths from 2 1/2 to 22 1/2 Inches
  • 3/4 Inch and 1 Inch External Diameter

3/4-385S-U21/2-304SS Model Options

View all models

Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

External Thread
Material
Insertion Length
Pressure Rating
Stem length/Probe Length
Pipe Size
Flange Size
Shank Diameter
Shank Style
Internal Thread
Bore Diameter
Well Type
Features


Application:
Standard length, 3/8' stem, bimetal thermometers. #14 gage thermocouple elements. Armored liquid-in-glass test thermometers. Other temperature-sensing elements having .377 in. maximum diameter.

Connection Size:
3/4' NPT and 1' NPT are standard. Other thread sizes are available upon request.

Protective Coatings for Thermowells:
• Resist Corrosion
• For Chemical Baths
• Color-Coded Sensors for Process Control
• Available in PFA, Epoxy and other materials. Consult Sales Department for complete information

Materials:
Brass (ASTM B-16), Carbon Steel (C-1018), Stainless Steel A.I.S.I. 304 & A.I.S.I. 316, Monel. Wells are also available in special materials; prices on request.


Series 385S—General Use
All dimensions in inches.

* NPSM internal pipe thread will accept both NPT and NPS male threads.


External Thread
P
Model No.Elem. Lgth.
A
Insert. Lgth.
U
3/4' NPT3/4-385S-U 2 1/2
        -U 4 1/2
        -U 7 1/2
        -U10 1/2
        -U13 1/2
        -U16 1/2
        -U22 1/2
4
6
9
12
15
18
24
2 1/2
4 1/2
7 1/2
10 1/2
13 1/2
16 1/2
22 1/2
1' NPT1-385S-U 2 1/2
        -U 4 1/2
        -U 7 1/2
        -U10 1/2
        -U13 1/2
        -U16 1/2
        -U22 1/2
4
6
9
12
15
18
24
2 1/2
4 1/2
7 1/2
10 1/2
13 1/2
16 1/2
22 1/2


Pressure-Temperature rating–lb per sq. inch
Material Temperature — °F
70° 200° 400° 600° 800° 1000° 1200°
Brass500042001000
Carbon Steel520050004800460035001500
A.I.S.I. 3047000620056005400520045001650
A.I.S.I. 3167000700064006200610051002500
Monel650060005400530052001500
See 385L Thermowell Page For Maximum Fluid Velocity
loading all models
loading all reviews
Rated 5 out of 5 by from Great products and very quick fulfillment. Products are always top notch and shipping is very fast.
Date published: 2022-11-19
Rated 5 out of 5 by from Excellent Standard Threaded Thermowell High quality Standard Threaded Thermowell. Expected nothing less from Omega products.
Date published: 2022-11-03
  • y_2024, m_12, d_2, h_7
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_US, sid_3-4-385S-U21-2-304SS, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 16ms
  • REVIEWS, PRODUCT
loading all QA

Do you have a hex length from flat to flat for you part number 3/4-385S-U21/2-BRASS

Asked by: amyp
Please send the request to temp@dwyeromega.com as that information is not on the drawing of the data sheet or readily available.
Answered by: ApplicationsEngineerANB
Date published: 2024-11-14
  • y_2024, m_12, d_2, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_1
  • loc_en_US, sid_3-4-385S-U21-2-304SS, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 33ms
  • QUESTIONS, PRODUCT
en-US
en
Save Configuration